diff --git a/app/views/domain/users/default/_recent_faved_posts.html.erb b/app/views/domain/users/default/_recent_faved_posts.html.erb
index b8fc5077..173e7111 100644
--- a/app/views/domain/users/default/_recent_faved_posts.html.erb
+++ b/app/views/domain/users/default/_recent_faved_posts.html.erb
@@ -1,5 +1,5 @@
 <%# nasty hack, otherwise postgres uses a bad query plan %>
-<% if user.is_a?(Domain::User::FaUser) %>
+<% if user.is_a?(Domain::User::FaUser) || user.is_a?(Domain::User::InkbunnyUser) %>
   <% fav_posts = user.faved_posts.includes(:creator).limit(5) %>
 <% else %>
   <% fav_posts = user.faved_posts.limit(5) %>
diff --git a/spec/controllers/domain/users_controller_spec.rb b/spec/controllers/domain/users_controller_spec.rb
new file mode 100644
index 00000000..26ce805b
--- /dev/null
+++ b/spec/controllers/domain/users_controller_spec.rb
@@ -0,0 +1,106 @@
+# typed: false
+require "rails_helper"
+
+RSpec.describe Domain::UsersController, type: :controller do
+  render_views
+
+  # Create a real user with admin role for tests that require authentication
+  let(:admin_user) { create(:user, :admin) }
+
+  # Shared examples for common show behavior across all user types
+  shared_examples "show action for user type" do |user_factory, param_prefix, param_attr|
+    let(:domain_user) { create(user_factory) }
+    let(:composite_param) { "#{param_prefix}@#{domain_user.send(param_attr)}" }
+
+    context "when user exists" do
+      it "returns a successful response" do
+        get :show, params: { id: composite_param }
+        expect(response).to be_successful
+      end
+
+      it "renders the show template" do
+        get :show, params: { id: composite_param }
+        expect(response).to render_template(:show)
+      end
+
+      it "sets the @user instance variable" do
+        get :show, params: { id: composite_param }
+        expect(assigns(:user)).to eq(domain_user)
+      end
+
+      it "authorizes the user" do
+        expect(controller).to receive(:authorize).with(domain_user)
+        get :show, params: { id: composite_param }
+      end
+
+      it "does not require authentication" do
+        # Ensure no user is signed in
+        sign_out :user
+
+        get :show, params: { id: composite_param }
+        expect(response).to be_successful
+      end
+    end
+
+    context "when user does not exist" do
+      let(:invalid_param) { "#{param_prefix}@nonexistent" }
+
+      it "raises ActiveRecord::RecordNotFound" do
+        expect { get :show, params: { id: invalid_param } }.to raise_error(
+          ActiveRecord::RecordNotFound,
+        )
+      end
+    end
+
+    context "with invalid composite parameter format" do
+      it "raises ActionController::BadRequest for malformed param" do
+        expect { get :show, params: { id: "invalid_format" } }.to raise_error(
+          ActionController::BadRequest,
+          /invalid id/,
+        )
+      end
+
+      it "raises ActionController::BadRequest for unknown model type" do
+        expect { get :show, params: { id: "unknown@test" } }.to raise_error(
+          ActionController::BadRequest,
+          /unknown model type/,
+        )
+      end
+    end
+  end
+
+  describe "GET #show" do
+    before do
+      # Mock authorization to allow all actions for these tests
+      allow(controller).to receive(:authorize).and_return(true)
+    end
+
+    context "for Domain::User::FaUser" do
+      include_examples "show action for user type",
+                       :domain_user_fa_user,
+                       "fa",
+                       :url_name
+    end
+
+    context "for Domain::User::E621User" do
+      include_examples "show action for user type",
+                       :domain_user_e621_user,
+                       "e621",
+                       :name
+    end
+
+    context "for Domain::User::InkbunnyUser" do
+      include_examples "show action for user type",
+                       :domain_user_inkbunny_user,
+                       "ib",
+                       :name
+    end
+
+    context "param configuration" do
+      it "uses the correct param config for user_id_param" do
+        param_config = described_class.param_config
+        expect(param_config.user_id_param).to eq(:id)
+      end
+    end
+  end
+end
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 1fa5e223..19140b30 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -80,7 +80,6 @@ RSpec.configure do |config|
 
   # Add FactoryBot methods
   config.include FactoryBot::Syntax::Methods
-
   config.render_views
 end