diff --git a/packages/dynamite/dynamite/lib/src/helpers/dart_helpers.dart b/packages/dynamite/dynamite/lib/src/helpers/dart_helpers.dart
index 977111da303..9915777bcb7 100644
--- a/packages/dynamite/dynamite/lib/src/helpers/dart_helpers.dart
+++ b/packages/dynamite/dynamite/lib/src/helpers/dart_helpers.dart
@@ -15,18 +15,43 @@ String toDartName(
     }
   }
 
-  if (_dartKeywords.contains(result) || RegExp(r'^[0-9]+$', multiLine: true).hasMatch(result)) {
+  if (_reservedNames.contains(result) || RegExp(r'^[0-9]+$', multiLine: true).hasMatch(result)) {
     return '\$$result';
   }
 
   return result;
 }
 
-final _dartKeywords = [
+/// Helper methods to work with strings.
+extension StringUtils on String {
+  /// Capitalizes this string.
+  ///
+  /// ```dart
+  /// ''.capitalize(); // ''
+  /// '   '.capitalize(); // ''
+  /// 'testValue'.capitalize(); // 'TestValue'
+  /// 'TestValue'.capitalize(); // 'TestValue'
+  ///
+  /// ```
+  String capitalize() {
+    final trimmed = trimLeft();
+
+    if (trimmed.isEmpty) {
+      return this;
+    }
+
+    final capitalChar = trimmed[0].toUpperCase();
+    return trimmed.replaceRange(0, 1, capitalChar);
+  }
+}
+
+/// A list of dart keywords and type names that need to be escaped.
+const _reservedNames = [
   'abstract',
   'as',
   'assert',
   'async',
+  'bool',
   'break',
   'case',
   'catch',
@@ -37,6 +62,7 @@ final _dartKeywords = [
   'default',
   'deferred',
   'do',
+  'double',
   'dynamic',
   'else',
   'enum',
@@ -56,12 +82,17 @@ final _dartKeywords = [
   'implements',
   'import',
   'in',
+  'int',
   'interface',
   'is',
   'library',
+  'List',
+  'Map',
   'mixin',
   'new',
   'null',
+  'num',
+  'Object',
   'on',
   'operator',
   'part',
@@ -70,6 +101,7 @@ final _dartKeywords = [
   'set',
   'show',
   'static',
+  'String',
   'super',
   'switch',
   'sync',
@@ -78,6 +110,8 @@ final _dartKeywords = [
   'true',
   'try',
   'typedef',
+  'Uint8List',
+  'Uri',
   'var',
   'void',
   'while',
diff --git a/packages/dynamite/dynamite/lib/src/models/type_result/some_of.dart b/packages/dynamite/dynamite/lib/src/models/type_result/some_of.dart
index e174c4fe54a..3b5ea740390 100644
--- a/packages/dynamite/dynamite/lib/src/models/type_result/some_of.dart
+++ b/packages/dynamite/dynamite/lib/src/models/type_result/some_of.dart
@@ -50,12 +50,12 @@ abstract class TypeResultSomeOf extends TypeResult {
   late final String typeName = _typeName;
 
   String get _typeName {
-    final buffer = StringBuffer(r'$');
+    final buffer = StringBuffer();
     for (final type in optimizedSubTypes) {
-      buffer.write(toDartName(type.className, uppercaseFirstCharacter: true));
+      buffer.write(type.className.capitalize());
     }
 
-    return buffer.toString();
+    return '\$${toDartName(buffer.toString(), uppercaseFirstCharacter: true)}';
   }
 
   BuiltList<TypeResult> get _optimizedSubTypes {
diff --git a/packages/dynamite/dynamite/test/dart_helpers_test.dart b/packages/dynamite/dynamite/test/dart_helpers_test.dart
index 521e7fd05c9..5d5f69130a3 100644
--- a/packages/dynamite/dynamite/test/dart_helpers_test.dart
+++ b/packages/dynamite/dynamite/test/dart_helpers_test.dart
@@ -23,5 +23,12 @@ void main() {
         expect(toDartName(value.$1, uppercaseFirstCharacter: true), value.$3);
       }
     });
+
+    test('capitalize', () {
+      expect(''.capitalize(), '');
+      expect('   '.capitalize(), '   ');
+      expect('testValue'.capitalize(), 'TestValue');
+      expect('TestValue'.capitalize(), 'TestValue');
+    });
   });
 }
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.dart b/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.dart
index d919d747136..86a86d41831 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.dart
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.dart
@@ -40,6 +40,13 @@ class Client extends DynamiteClient {
   /// Parameters:
   ///   * [contentString]
   ///   * [contentParameter]
+  ///   * [array]
+  ///   * [$bool]
+  ///   * [string]
+  ///   * [stringBinary]
+  ///   * [$int]
+  ///   * [$double]
+  ///   * [$num]
   ///
   /// Status codes:
   ///   * 200
@@ -49,10 +56,24 @@ class Client extends DynamiteClient {
   Future<DynamiteResponse<JsonObject, void>> $get({
     final ContentString<BuiltMap<String, JsonObject>>? contentString,
     final ContentString<BuiltMap<String, JsonObject>>? contentParameter,
+    final List<JsonObject>? array,
+    final bool? $bool,
+    final String? string,
+    final Uint8List? stringBinary,
+    final int? $int,
+    final double? $double,
+    final num? $num,
   }) async {
     final rawResponse = $getRaw(
       contentString: contentString,
       contentParameter: contentParameter,
+      array: array,
+      $bool: $bool,
+      string: string,
+      stringBinary: stringBinary,
+      $int: $int,
+      $double: $double,
+      $num: $num,
     );
 
     return rawResponse.future;
@@ -66,6 +87,13 @@ class Client extends DynamiteClient {
   /// Parameters:
   ///   * [contentString]
   ///   * [contentParameter]
+  ///   * [array]
+  ///   * [$bool]
+  ///   * [string]
+  ///   * [stringBinary]
+  ///   * [$int]
+  ///   * [$double]
+  ///   * [$num]
   ///
   /// Status codes:
   ///   * 200
@@ -76,6 +104,13 @@ class Client extends DynamiteClient {
   DynamiteRawResponse<JsonObject, void> $getRaw({
     final ContentString<BuiltMap<String, JsonObject>>? contentString,
     final ContentString<BuiltMap<String, JsonObject>>? contentParameter,
+    final List<JsonObject>? array,
+    final bool? $bool,
+    final String? string,
+    final Uint8List? stringBinary,
+    final int? $int,
+    final double? $double,
+    final num? $num,
   }) {
     final pathParameters = <String, dynamic>{};
     final queryParameters = <String, dynamic>{};
@@ -100,6 +135,27 @@ class Client extends DynamiteClient {
         ]),
       );
     }
+    if (array != null) {
+      queryParameters['array'] = array.map((final e) => e.toString());
+    }
+    if ($bool != null) {
+      queryParameters['bool'] = $bool.toString();
+    }
+    if (string != null) {
+      queryParameters['string'] = string;
+    }
+    if (stringBinary != null) {
+      queryParameters['string_binary'] = stringBinary.toString();
+    }
+    if ($int != null) {
+      queryParameters['int'] = $int.toString();
+    }
+    if ($double != null) {
+      queryParameters['double'] = $double.toString();
+    }
+    if ($num != null) {
+      queryParameters['num'] = $num.toString();
+    }
     var uri = Uri.parse(UriTemplate('/').expand(pathParameters));
     if (queryParameters.isNotEmpty) {
       uri = uri.replace(queryParameters: queryParameters);
@@ -188,7 +244,8 @@ final Serializers serializers = (Serializers().toBuilder()
         ]),
         ContentStringBuilder<BuiltMap<String, JsonObject>>.new,
       )
-      ..add(ContentString.serializer))
+      ..add(ContentString.serializer)
+      ..addBuilderFactory(const FullType(BuiltList, [FullType(JsonObject)]), ListBuilder<JsonObject>.new))
     .build();
 
 @visibleForTesting
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.json b/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.json
index ecf3fd6713c..6bcaf849472 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.json
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/parameters.openapi.json
@@ -31,6 +31,57 @@
                                 }
                             }
                         }
+                    },
+                    {
+                        "name": "array",
+                        "in": "query",
+                        "schema": {
+                            "type": "array"
+                        }
+                    },
+                    {
+                        "name": "bool",
+                        "in": "query",
+                        "schema": {
+                            "type": "boolean"
+                        }
+                    },
+                    {
+                        "name": "string",
+                        "in": "query",
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    {
+                        "name": "string_binary",
+                        "in": "query",
+                        "schema": {
+                            "type": "string",
+                            "format": "binary"
+                        }
+                    },
+                    {
+                        "name": "int",
+                        "in": "query",
+                        "schema": {
+                            "type": "integer"
+                        }
+                    },
+                    {
+                        "name": "double",
+                        "in": "query",
+                        "schema": {
+                            "type": "number",
+                            "format": "float"
+                        }
+                    },
+                    {
+                        "name": "num",
+                        "in": "query",
+                        "schema": {
+                            "type": "number"
+                        }
                     }
                 ],
                 "responses": {
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.dart b/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.dart
index bd102c92737..c58949a595f 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.dart
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.dart
@@ -36,6 +36,18 @@ class Client extends DynamiteClient {
         );
 }
 
+typedef $Object = dynamic;
+
+typedef $String = dynamic;
+
+typedef $Uri = dynamic;
+
+typedef $Uint8List = dynamic;
+
+typedef $List = dynamic;
+
+typedef $Map = dynamic;
+
 @BuiltValue(instantiable: false)
 abstract interface class $BaseInterface {
   @BuiltValueField(wireName: 'bool')
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.json b/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.json
index 47b500be45c..5f2954fcb3b 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.json
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/types.openapi.json
@@ -51,6 +51,24 @@
                         }
                     }
                 }
+            },
+            "Object": {
+                "type": "object"
+            },
+            "String": {
+                "type": "object"
+            },
+            "Uri": {
+                "type": "object"
+            },
+            "Uint8List": {
+                "type": "object"
+            },
+            "List": {
+                "type": "object"
+            },
+            "Map": {
+                "type": "object"
             }
         }
     },
diff --git a/packages/dynamite/dynamite_end_to_end_test/test/typestest.dart b/packages/dynamite/dynamite_end_to_end_test/test/types_test.dart
similarity index 100%
rename from packages/dynamite/dynamite_end_to_end_test/test/typestest.dart
rename to packages/dynamite/dynamite_end_to_end_test/test/types_test.dart