diff --git a/Sources/AmiiboService/openapi.yaml b/Sources/AmiiboService/openapi.yaml
index cb61bcb..19a540e 100644
--- a/Sources/AmiiboService/openapi.yaml
+++ b/Sources/AmiiboService/openapi.yaml
@@ -169,10 +169,14 @@ paths:
           description: Service is not available.
   /character:
     get:
-      description: Get a list of all the game characters available in the database.
-      operationId: getGameCharacters
       tags:
         - Game
+      summary: Get the game characters.
+      description: |
+        Get a list of all the game characters available in the database.
+
+        Please refer to [the documentation of the endpoint](https://www.amiiboapi.com/docs/#character) for further information.
+      operationId: getGameCharacters
       parameters:
         - $ref: '#/components/parameters/Key'
           description: A key of a game character key to include in the response.
@@ -180,11 +184,15 @@ paths:
           description: A name of a game character key to include in the response.
       responses:
         '200':
-          $ref: '#/components/responses/SuccessTuple'
+          description: Successful response returning an object that contains one or more game characters.
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GameCharacterWrapper'
         '400':
-          description: A game character bad request.
+          $ref: '#/components/responses/BadRequest'
         '404':
-          description: A game character not found.
+          $ref: '#/components/responses/NotFound'
         '500':
           description: Service is not available.
   /gameseries:
@@ -427,6 +435,16 @@ components:
       required:
         - Usage
         - write
+    GameCharacter:
+      description: A type that represents a game character.
+      allOf:
+        - $ref: '#/components/schemas/Tuple'
+        - type: object
+          properties:
+            key:
+              description: A key of a game character.
+            name: 
+              description: A name of a game character.
     GameSeries:
       description: A type that represents a game series.
       allOf:
@@ -510,6 +528,17 @@ components:
             - $ref: '#/components/schemas/AmiiboTypeList'
       required: 
         - amiibo
+    GameCharacterWrapper:
+      description: A type that wraps either one or a list of game characters.
+      type: object
+      properties:
+        amiibo: 
+          description: A container that have one or more game characters.
+          oneOf:
+            - $ref: '#/components/schemas/GameCharacter'
+            - $ref: '#/components/schemas/GameCharacterList'
+      required: 
+        - amiibo
     GameSeriesWrapper:
       description: A type that wraps either one or a list of game series.
       type: object