Thor

Thor is a Halloween costume for Roll Cake Cookie featured in Halloween Party events. It was first, and only, usable during Halloween Party 2016. However, after the event period, the costume would no longer be accessible.

Being based on the Marvel Cinematic Universe version of Thor, this costume puts Roll Cake Cookie in an outfit akin to the famous superhero- specifically the classic iteration of him.

His hammer is visibly changed to have the lines through the roll cake be a glowing blue.

Unfortunately, like many other Halloween Party costumes, this costume is completely inaccessible in any other Cookie Run game and it is currently not known if it will ever make an appearance again, very blatantly due to copyright reasons.

Trivia

 * Both Pancake Cookie and Roll Cake Cookie have matching costumes, Loki and Thor respectively. This is because both the Cookie Run duo and the Marvel Cinematic Universe duo are brothers