Ex Ray is an orange monster who appeared in the Scrubs episode "My ABC's", along with other characters from Sesame Street. The new monster is a patient of Sacred Heart Hospital in one of J.D.'s fantasies.

In the fantasy sequence, J.D. gives Ex Ray some bad news, explaining that the monster has a hand inside it. "That explains so many things," the monster sighs.

He appeared again in Hooper's Store alongside the Count and Sherlock Hemlock on Episode 4206. It was an on-topic appearance, as the storyline dealt with x-rays.