Caroline Pham was a graphic designer for Happy Wheels. As a previous friend of Jim Bonacci, she was hired and is responsible for some static illustrations within Happy Wheels, including level backgrounds and buildings. Caroline's employment was revealed on July 5th, 2011 by Bonacci on the news post hi. She was the third officially known Happy Wheels developer, after Jim and Jason. It is unknown if she has an account on Happy Wheels. You can see her abstract website here. Her work included the food items and blade weapons.
Jim stated on the Happy Wheels Discord that she moved to Canada a few years ago and hasn't seen her since.
She is the only game developer without a badge on this wiki dedicated to her.