Celery (Salad Daze)

A celery was present at a dinner party along with a Carrot and Tomato in an Alice in Wonderland-inspired dimension warped around Peri Brown's thoughts. When Peri revealed that she ate vegetables, the Celery and Carrot ran and hid in fear. The Tomato was unfazed as he was not a vegetable. (COMIC: Salad Daze)

Behind the scenes
The Celery was a parody of the Mad Hatter from Lewis Carroll's Alice in Wonderland.