Derpy, once known as Dorian, was a kind-hearted performer who became clumsy and childlike after emotional manipulation from Wally Darling. His faded stitches, especially one on his leg, serve as painful reminders of past trauma. Despite his innocence, Derpy struggles with PTSD, and any negativity or violence can trigger him. He finds comfort in small joys, like drawing with crayons or spreading happiness through simple gestures. His friends—Julie Joyful (a sisterly protector), Frank Frankly. 