diff --git a/lib/travis/api/v3/renderer/account.rb b/lib/travis/api/v3/renderer/account.rb
new file mode 100644
index 00000000..c69fe61b
--- /dev/null
+++ b/lib/travis/api/v3/renderer/account.rb
@@ -0,0 +1,11 @@
+require 'travis/api/v3/renderer/model_renderer'
+require 'travis/api/v3/renderer/avatar_url'
+
+module Travis::API::V3
+  class Renderer::Account < Renderer::ModelRenderer
+    include Renderer::AvatarURL
+
+    representation(:minimal,  :id, :login)
+    representation(:standard, :id, :login, :name, :github_id, :avatar_url)
+  end
+end
diff --git a/lib/travis/api/v3/renderer/model_renderer.rb b/lib/travis/api/v3/renderer/model_renderer.rb
index 7a253178..07944fec 100644
--- a/lib/travis/api/v3/renderer/model_renderer.rb
+++ b/lib/travis/api/v3/renderer/model_renderer.rb
@@ -16,15 +16,18 @@ module Travis::API::V3
         class_eval "def #{field}; @model.#{field}; end" unless method_defined?(field)
         available_attributes << field.to_s
       end
-      representations[name] = fields
+      representations[name] ||= []
+      representations[name]  += fields
     end
 
+    @representations = {}
     def self.representations
-      @representations ||= {}
+      @representations ||= superclass.representations.dup
     end
 
+    @available_attributes = Set.new
     def self.available_attributes
-      @available_attributes ||= Set.new
+      @available_attributes ||= superclass.available_attributes.dup
     end
 
     def self.render(model, representation = :standard, **options)
diff --git a/lib/travis/api/v3/renderer/organization.rb b/lib/travis/api/v3/renderer/organization.rb
index 483d46b3..00d50b0f 100644
--- a/lib/travis/api/v3/renderer/organization.rb
+++ b/lib/travis/api/v3/renderer/organization.rb
@@ -1,10 +1,6 @@
 require 'travis/api/v3/renderer/model_renderer'
 
 module Travis::API::V3
-  class Renderer::Organization < Renderer::ModelRenderer
-    include Renderer::AvatarURL
-
-    representation(:minimal,  :id, :login)
-    representation(:standard, :id, :login, :name, :github_id, :avatar_url)
+  class Renderer::Organization < Renderer::Account
   end
 end
diff --git a/lib/travis/api/v3/renderer/user.rb b/lib/travis/api/v3/renderer/user.rb
index 83e1c30c..61aa8b1e 100644
--- a/lib/travis/api/v3/renderer/user.rb
+++ b/lib/travis/api/v3/renderer/user.rb
@@ -1,10 +1,7 @@
 require 'travis/api/v3/renderer/model_renderer'
 
 module Travis::API::V3
-  class Renderer::User < Renderer::ModelRenderer
-    include Renderer::AvatarURL
-
-    representation(:minimal,  :id, :login)
-    representation(:standard, :id, :login, :name, :github_id, :avatar_url, :is_syncing, :synced_at)
+  class Renderer::User < Renderer::Account
+    representation(:standard, :is_syncing, :synced_at)
   end
 end