Dr. Actor is a minor character who first appears in the episode, "The Lost Mattress." He also makes an appearance in the episode, "All That Glitters," when it is revealed that he is simply an actor doing research for a part.
Dr. Actor is a slim, lavender fish. He is seen wearing a white doctor uniform with a green tie and a light yellow undershirt. He has large light purple lips and a lavender fin on his back.
He once auditioned for a play or, most likely, a soap opera (possibly a Soap Opera Channel production), but he unfortunately did not get the call-back. He then became a full-time doctor.