diff --git a/runtime/observatory/lib/src/elements/helpers/any_ref.dart b/runtime/observatory/lib/src/elements/helpers/any_ref.dart
index 222f40d4736..ac5e1e38443 100644
--- a/runtime/observatory/lib/src/elements/helpers/any_ref.dart
+++ b/runtime/observatory/lib/src/elements/helpers/any_ref.dart
@@ -93,8 +93,6 @@ Element anyRef(M.IsolateRef isolate, ref, M.ObjectRepository objects,
     }
   } else if (ref is M.Sentinel) {
     return new SentinelValueElement(ref, queue: queue).element;
-  } else if (ref is num || ref is String) {
-    return new SpanElement()..text = ref.toString();
   }
   throw new Exception('Unknown ref type (${ref.runtimeType})');
 }
diff --git a/runtime/observatory/lib/src/elements/instance_ref.dart b/runtime/observatory/lib/src/elements/instance_ref.dart
index 01ba0330212..819a499c99f 100644
--- a/runtime/observatory/lib/src/elements/instance_ref.dart
+++ b/runtime/observatory/lib/src/elements/instance_ref.dart
@@ -128,7 +128,6 @@ class InstanceRefElement extends CustomElement implements Renderable {
       case M.InstanceKind.functionType:
       case M.InstanceKind.typeRef:
       case M.InstanceKind.typeParameter:
-      case M.InstanceKind.recordType:
         return [
           new AnchorElement(href: Uris.inspect(_isolate, object: _instance))
             ..text = _instance.name
@@ -195,10 +194,12 @@ class InstanceRefElement extends CustomElement implements Renderable {
             ]
         ];
       case M.InstanceKind.mirrorReference:
+        return [
+          new AnchorElement(href: Uris.inspect(_isolate, object: _instance))
+            ..classes = ['emphasize']
+            ..text = _instance.clazz!.name
+        ];
       case M.InstanceKind.weakProperty:
-      case M.InstanceKind.finalizer:
-      case M.InstanceKind.weakReference:
-      case M.InstanceKind.record:
         return [
           new AnchorElement(href: Uris.inspect(_isolate, object: _instance))
             ..classes = ['emphasize']
@@ -215,7 +216,6 @@ class InstanceRefElement extends CustomElement implements Renderable {
       case M.InstanceKind.mirrorReference:
       case M.InstanceKind.stackTrace:
       case M.InstanceKind.weakProperty:
-      case M.InstanceKind.recordType:
         return true;
       case M.InstanceKind.list:
       case M.InstanceKind.map:
@@ -339,18 +339,6 @@ class InstanceRefElement extends CustomElement implements Renderable {
                   queue: _r.queue)
               .element,
         ];
-      case M.InstanceKind.recordType:
-        final fields = _loadedInstance!.fields!.toList();
-        return [
-          for (int i = 0; i < fields.length; ++i) ...[
-            new SpanElement()..text = '${fields[i].name} = ',
-            new InstanceRefElement(
-                    _isolate, fields[i].value!.asValue!, _objects,
-                    queue: _r.queue)
-                .element,
-            if (i + 1 != fields.length) new BRElement(),
-          ]
-        ];
       default:
         return [];
     }
diff --git a/runtime/observatory/lib/src/elements/instance_view.dart b/runtime/observatory/lib/src/elements/instance_view.dart
index 4c4d69064a1..2063c281800 100644
--- a/runtime/observatory/lib/src/elements/instance_view.dart
+++ b/runtime/observatory/lib/src/elements/instance_view.dart
@@ -335,12 +335,9 @@ class InstanceViewElement extends CustomElement implements Renderable {
                     ..content = <Element>[
                       new DivElement()
                         ..classes = ['memberList']
-                        ..children = fields.map<Element>((f) {
-                          final name = _instance.kind == M.InstanceKind.record
-                              ? f.name
-                              : f.decl;
-                          return member(name, f.value);
-                        }).toList()
+                        ..children = fields
+                            .map<Element>((f) => member(f.decl, f.value))
+                            .toList()
                     ])
                   .element
             ]
diff --git a/runtime/observatory/lib/src/models/objects/instance.dart b/runtime/observatory/lib/src/models/objects/instance.dart
index 1b2d58e2271..81020959067 100644
--- a/runtime/observatory/lib/src/models/objects/instance.dart
+++ b/runtime/observatory/lib/src/models/objects/instance.dart
@@ -126,18 +126,6 @@ enum InstanceKind {
 
   /// An instance of the Dart class RawReceivePort
   receivePort,
-
-  /// An instance of Record.
-  record,
-
-  /// An instance of RecordType
-  recordType,
-
-  /// An instance of Finalizer
-  finalizer,
-
-  /// An instance of WeakReference
-  weakReference,
 }
 
 bool isTypedData(InstanceKind? kind) {
@@ -475,8 +463,7 @@ abstract class Instance extends Object implements InstanceRef {
 
 abstract class BoundField {
   FieldRef? get decl;
-  Guarded<dynamic>? get value;
-  dynamic get name;
+  Guarded<InstanceRef>? get value;
 }
 
 abstract class NativeField {
diff --git a/runtime/observatory/lib/src/service/object.dart b/runtime/observatory/lib/src/service/object.dart
index 1a256a6ad08..c4af948dc1c 100644
--- a/runtime/observatory/lib/src/service/object.dart
+++ b/runtime/observatory/lib/src/service/object.dart
@@ -2108,7 +2108,7 @@ class ServiceMap extends ServiceObject
     _map.clear();
     map.forEach((k, v) => _map[k] = v);
 
-    name = _map['name']?.toString();
+    name = _map['name'];
     vmName = (_map.containsKey('_vmName') ? _map['_vmName'] : name);
   }
 
@@ -2791,33 +2791,25 @@ M.InstanceKind stringToInstanceKind(String s) {
       return M.InstanceKind.typeRef;
     case 'ReceivePort':
       return M.InstanceKind.receivePort;
-    case '_RecordType':
-      return M.InstanceKind.recordType;
-    case '_Record':
-      return M.InstanceKind.record;
-    case 'Finalizer':
-      return M.InstanceKind.finalizer;
-    case 'WeakReference':
-      return M.InstanceKind.weakReference;
   }
   var message = 'Unrecognized instance kind: $s';
   Logger.root.severe(message);
   throw new ArgumentError(message);
 }
 
-class Guarded<T> implements M.Guarded<T> {
+class Guarded<T extends ServiceObject> implements M.Guarded<T> {
   bool get isValue => asValue != null;
   bool get isSentinel => asSentinel != null;
   final Sentinel? asSentinel;
   final T? asValue;
 
-  factory Guarded(dynamic obj) {
+  factory Guarded(ServiceObject obj) {
     if (obj is Sentinel) {
       return new Guarded.fromSentinel(obj);
     } else if (obj is T) {
       return new Guarded.fromValue(obj);
     }
-    throw new Exception('${obj.runtimeType} is neither Sentinel or $T');
+    throw new Exception('${obj.type} is neither Sentinel or $T');
   }
 
   Guarded.fromSentinel(this.asSentinel) : asValue = null;
@@ -2825,11 +2817,9 @@ class Guarded<T> implements M.Guarded<T> {
 }
 
 class BoundField implements M.BoundField {
-  final Field? decl;
-  // String|int
-  final dynamic name;
-  final Guarded<dynamic> value;
-  BoundField(this.decl, this.name, value) : value = new Guarded(value);
+  final Field decl;
+  final Guarded<Instance> value;
+  BoundField(this.decl, value) : value = new Guarded(value);
 }
 
 class NativeField implements M.NativeField {
@@ -2926,7 +2916,7 @@ class Instance extends HeapObject implements M.Instance {
   Instance._empty(ServiceObjectOwner? owner) : super._empty(owner);
 
   void _update(Map map, bool mapIsRef) {
-    // Extract full properties.
+    // Extract full properties.1
     _upgradeCollection(map, isolate);
     super._update(map, mapIsRef);
 
@@ -2935,7 +2925,7 @@ class Instance extends HeapObject implements M.Instance {
     // Coerce absence to false.
     valueAsStringIsTruncated = map['valueAsStringIsTruncated'] == true;
     closureFunction = map['closureFunction'];
-    name = map['name']?.toString();
+    name = map['name'];
     length = map['length'];
     pattern = map['pattern'];
     typeClass = map['typeClass'];
@@ -2968,7 +2958,7 @@ class Instance extends HeapObject implements M.Instance {
     if (map['fields'] != null) {
       var fields = <BoundField>[];
       for (var f in map['fields']) {
-        fields.add(new BoundField(f['decl'], f['name'], f['value']));
+        fields.add(new BoundField(f['decl'], f['value']));
       }
       this.fields = fields;
     } else {
diff --git a/runtime/observatory/tests/ui/inspector.dart b/runtime/observatory/tests/ui/inspector.dart
index eeb461f37b7..e8fc90a4a7f 100644
--- a/runtime/observatory/tests/ui/inspector.dart
+++ b/runtime/observatory/tests/ui/inspector.dart
@@ -2,8 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart = 2.19
-
 // See inspector.txt for expected behavior.
 
 library manual_inspector_test;
@@ -45,13 +43,10 @@ class Node {
   var blockCopying;
   var blockFull;
   var blockFullWithChain;
-  var blockType;
   var boundedType;
   var capability;
   var counter;
   var expando;
-  var finalizer;
-  var finalizerEntry;
   var float32x4;
   var float64;
   var float64x2;
@@ -67,10 +62,7 @@ class Node {
   var mirrorReference;
   var portReceive;
   var portSend;
-  var record;
-  var recordType;
   var regex;
-  late var sentinel;  // Not initialized
   var smi;
   var stacktrace;
   var string;
@@ -84,12 +76,9 @@ class Node {
   var theTrue;
   var type;
   var typeParameter;
-  var typedDataArray;
-  var typedDataView;
-  var typedDataUnmodifiableView;
+  var typedData;
   var userTag;
   var weakProperty;
-  var weakReference;
 
   genStackTrace() {
     try {
@@ -152,19 +141,16 @@ class Node {
     array[0] = 1;
     array[1] = 2;
     array[2] = 3;
-    bigint = BigInt.one << 65;
+    bigint = 1 << 65;
     blockClean = genCleanBlock();
     blockCopying = genCopyingBlock();
     blockFull = genFullBlock();
     blockFullWithChain = genFullBlockWithChain();
-    blockType = blockClean.runtimeType;
     boundedType = extractPrivateField(
         reflect(new B<int>()).type.typeVariables.single, '_reflectee');
     counter = new Counter("CounterName", "Counter description");
     expando = new Expando("expando-name");
     expando[array] = 'The weakly associated value';
-    finalizer = Finalizer<dynamic>((_){});
-    finalizer.attach(this, this);
     float32x4 = new Float32x4(0.0, -1.0, 3.14, 2e28);
     float64 = 3.14;
     float64x2 = new Float64x2(0.0, 3.14);
@@ -184,8 +170,6 @@ class Node {
     mirrorReference = extractPrivateField(mirrorClass, '_reflectee');
     portReceive = new RawReceivePort();
     portSend = portReceive.sendPort;
-    record = (1, 2, three: 3, four: 4);
-    recordType = record.runtimeType;
     regex = new RegExp("a*b+c");
     smi = 7;
     stacktrace = genStackTrace();
@@ -201,13 +185,10 @@ class Node {
     type = String;
     typeParameter =
         extractPrivateField(reflectClass(A).typeVariables.single, '_reflectee');
-    typedDataArray = Uint8List(32);
-    typedDataView = Uint8List.view(typedDataArray.buffer, 16);
-    typedDataUnmodifiableView = UnmodifiableUint8ListView(typedDataArray);
+    typedData = extractPrivateField(new ByteData(64), '_typedData');
     userTag = new UserTag("Example tag name");
     weakProperty =
         extractPrivateField(expando, '_data').firstWhere((e) => e != null);
-    weakReference = WeakReference(this);
 
     Isolate.spawn(secondMain, "Hello2").then((otherIsolate) {
       isolate = otherIsolate;
diff --git a/runtime/observatory/tests/ui/inspector_part.dart b/runtime/observatory/tests/ui/inspector_part.dart
index 6222354a3ea..06589e319f8 100644
--- a/runtime/observatory/tests/ui/inspector_part.dart
+++ b/runtime/observatory/tests/ui/inspector_part.dart
@@ -2,8 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart = 2.19
-
 part of manual_inspector_test;
 
 functionInPart() {}
diff --git a/runtime/observatory_2/lib/src/elements/helpers/any_ref.dart b/runtime/observatory_2/lib/src/elements/helpers/any_ref.dart
index a1f2d9617bc..0ae29302c3b 100644
--- a/runtime/observatory_2/lib/src/elements/helpers/any_ref.dart
+++ b/runtime/observatory_2/lib/src/elements/helpers/any_ref.dart
@@ -93,8 +93,6 @@ Element anyRef(M.IsolateRef isolate, ref, M.ObjectRepository objects,
     }
   } else if (ref is M.Sentinel) {
     return new SentinelValueElement(ref, queue: queue).element;
-  } else if (ref is num || ref is String) {
-    return new SpanElement()..text = ref.toString();
   }
   throw new Exception('Unknown ref type (${ref.runtimeType})');
 }
diff --git a/runtime/observatory_2/lib/src/elements/instance_ref.dart b/runtime/observatory_2/lib/src/elements/instance_ref.dart
index e98148e86f0..a4b3f9e33dc 100644
--- a/runtime/observatory_2/lib/src/elements/instance_ref.dart
+++ b/runtime/observatory_2/lib/src/elements/instance_ref.dart
@@ -127,7 +127,6 @@ class InstanceRefElement extends CustomElement implements Renderable {
       case M.InstanceKind.functionType:
       case M.InstanceKind.typeRef:
       case M.InstanceKind.typeParameter:
-      case M.InstanceKind.recordType:
         return [
           new AnchorElement(href: Uris.inspect(_isolate, object: _instance))
             ..text = _instance.name
@@ -193,10 +192,12 @@ class InstanceRefElement extends CustomElement implements Renderable {
             ]
         ];
       case M.InstanceKind.mirrorReference:
+        return [
+          new AnchorElement(href: Uris.inspect(_isolate, object: _instance))
+            ..classes = ['emphasize']
+            ..text = _instance.clazz.name
+        ];
       case M.InstanceKind.weakProperty:
-      case M.InstanceKind.finalizer:
-      case M.InstanceKind.weakReference:
-      case M.InstanceKind.record:
         return [
           new AnchorElement(href: Uris.inspect(_isolate, object: _instance))
             ..classes = ['emphasize']
@@ -213,7 +214,6 @@ class InstanceRefElement extends CustomElement implements Renderable {
       case M.InstanceKind.mirrorReference:
       case M.InstanceKind.stackTrace:
       case M.InstanceKind.weakProperty:
-      case M.InstanceKind.recordType:
         return true;
       case M.InstanceKind.list:
       case M.InstanceKind.map:
@@ -337,17 +337,6 @@ class InstanceRefElement extends CustomElement implements Renderable {
                   queue: _r.queue)
               .element,
         ];
-      case M.InstanceKind.recordType:
-        final fields = _loadedInstance.fields.toList();
-        return [
-          for (int i = 0; i < fields.length; ++i) ...[
-            new SpanElement()..text = '${fields[i].name} = ',
-            new InstanceRefElement(_isolate, fields[i].value.asValue, _objects,
-                    queue: _r.queue)
-                .element,
-            if (i + 1 != fields.length) new BRElement(),
-          ]
-        ];
       default:
         return [];
     }
diff --git a/runtime/observatory_2/lib/src/elements/instance_view.dart b/runtime/observatory_2/lib/src/elements/instance_view.dart
index 592a978a1a1..fcc18125c78 100644
--- a/runtime/observatory_2/lib/src/elements/instance_view.dart
+++ b/runtime/observatory_2/lib/src/elements/instance_view.dart
@@ -334,12 +334,9 @@ class InstanceViewElement extends CustomElement implements Renderable {
                     ..content = <Element>[
                       new DivElement()
                         ..classes = ['memberList']
-                        ..children = fields.map<Element>((f) {
-                          final name = _instance.kind == M.InstanceKind.record
-                              ? f.name
-                              : f.decl;
-                          return member(name, f.value);
-                        }).toList()
+                        ..children = fields
+                            .map<Element>((f) => member(f.decl, f.value))
+                            .toList()
                     ])
                   .element
             ]
diff --git a/runtime/observatory_2/lib/src/models/objects/instance.dart b/runtime/observatory_2/lib/src/models/objects/instance.dart
index ff914bc5840..b21c572a942 100644
--- a/runtime/observatory_2/lib/src/models/objects/instance.dart
+++ b/runtime/observatory_2/lib/src/models/objects/instance.dart
@@ -126,18 +126,6 @@ enum InstanceKind {
 
   /// An instance of the Dart class RawReceivePort
   receivePort,
-
-  /// An instance of Record.
-  record,
-
-  /// An instance of RecordType
-  recordType,
-
-  /// An instance of Finalizer
-  finalizer,
-
-  /// An instance of WeakReference
-  weakReference,
 }
 
 bool isTypedData(InstanceKind kind) {
@@ -466,8 +454,7 @@ abstract class Instance extends Object implements InstanceRef {
 
 abstract class BoundField {
   FieldRef get decl;
-  dynamic get name;
-  Guarded<dynamic> get value;
+  Guarded<InstanceRef> get value;
 }
 
 abstract class NativeField {
diff --git a/runtime/observatory_2/lib/src/service/object.dart b/runtime/observatory_2/lib/src/service/object.dart
index bfe5b05d3af..5c9f6df4967 100644
--- a/runtime/observatory_2/lib/src/service/object.dart
+++ b/runtime/observatory_2/lib/src/service/object.dart
@@ -2118,7 +2118,7 @@ class ServiceMap extends ServiceObject
     _map.clear();
     _map.addAll(map);
 
-    name = _map['name']?.toString();
+    name = _map['name'];
     vmName = (_map.containsKey('_vmName') ? _map['_vmName'] : name);
   }
 
@@ -2800,33 +2800,25 @@ M.InstanceKind stringToInstanceKind(String s) {
       return M.InstanceKind.typeRef;
     case 'ReceivePort':
       return M.InstanceKind.receivePort;
-    case '_Record':
-      return M.InstanceKind.record;
-    case '_RecordType':
-      return M.InstanceKind.recordType;
-    case 'Finalizer':
-      return M.InstanceKind.finalizer;
-    case 'WeakReference':
-      return M.InstanceKind.weakReference;
   }
   var message = 'Unrecognized instance kind: $s';
   Logger.root.severe(message);
   throw new ArgumentError(message);
 }
 
-class Guarded<T> implements M.Guarded<T> {
+class Guarded<T extends ServiceObject> implements M.Guarded<T> {
   bool get isValue => asValue != null;
   bool get isSentinel => asSentinel != null;
   final Sentinel asSentinel;
   final T asValue;
 
-  factory Guarded(dynamic obj) {
+  factory Guarded(ServiceObject obj) {
     if (obj is Sentinel) {
       return new Guarded.fromSentinel(obj);
     } else if (obj is T) {
       return new Guarded.fromValue(obj);
     }
-    throw new Exception('${obj.runtimeType} is neither Sentinel or $T');
+    throw new Exception('${obj.type} is neither Sentinel or $T');
   }
 
   Guarded.fromSentinel(this.asSentinel) : asValue = null;
@@ -2835,10 +2827,8 @@ class Guarded<T> implements M.Guarded<T> {
 
 class BoundField implements M.BoundField {
   final Field decl;
-  // String|int
-  final dynamic name;
-  final Guarded<dynamic> value;
-  BoundField(this.decl, this.name, value) : value = new Guarded(value);
+  final Guarded<Instance> value;
+  BoundField(this.decl, value) : value = new Guarded(value);
 }
 
 class NativeField implements M.NativeField {
@@ -2939,7 +2929,7 @@ class Instance extends HeapObject implements M.Instance {
   Instance._empty(ServiceObjectOwner owner) : super._empty(owner);
 
   void _update(Map map, bool mapIsRef) {
-    // Extract full properties.
+    // Extract full properties.1
     _upgradeCollection(map, isolate);
     super._update(map, mapIsRef);
 
@@ -2948,7 +2938,7 @@ class Instance extends HeapObject implements M.Instance {
     // Coerce absence to false.
     valueAsStringIsTruncated = map['valueAsStringIsTruncated'] == true;
     closureFunction = map['closureFunction'];
-    name = map['name']?.toString();
+    name = map['name'];
     length = map['length'];
     pattern = map['pattern'];
     typeClass = map['typeClass'];
@@ -2981,7 +2971,7 @@ class Instance extends HeapObject implements M.Instance {
     if (map['fields'] != null) {
       var fields = <BoundField>[];
       for (var f in map['fields']) {
-        fields.add(new BoundField(f['decl'], f['name'], f['value']));
+        fields.add(new BoundField(f['decl'], f['value']));
       }
       this.fields = fields;
     } else {
diff --git a/runtime/vm/object_service.cc b/runtime/vm/object_service.cc
index b33d27922ee..053c1c7a66b 100644
--- a/runtime/vm/object_service.cc
+++ b/runtime/vm/object_service.cc
@@ -1128,7 +1128,7 @@ void Instance::PrintSharedInstanceJSON(JSONObject* jsobj,
 
   Array& field_array = Array::Handle();
   Field& field = Field::Handle();
-  Object& field_value = Object::Handle();
+  Instance& field_value = Instance::Handle();
   {
     JSONArray jsarr(jsobj, "fields");
     for (intptr_t i = classes.length() - 1; i >= 0; i--) {
@@ -1137,7 +1137,7 @@ void Instance::PrintSharedInstanceJSON(JSONObject* jsobj,
         for (intptr_t j = 0; j < field_array.Length(); j++) {
           field ^= field_array.At(j);
           if (!field.is_static()) {
-            field_value = GetField(field);
+            field_value ^= GetField(field);
             JSONObject jsfield(&jsarr);
             jsfield.AddProperty("type", "BoundField");
             jsfield.AddProperty("decl", field);