The therapist is a mustard yellow fish with a green dorsal fin. He wears a tan suit, a pair of glasses, a necktie, and black pants.
The therapist does not say much as he appears in the episodes. His only line in the episode, "SquidBob TentaclePants" was: "So, what seems to be the problem, Mr. Tentacles?" and his only line in "All That Glitters" was: "M-hm, m hm, Go on, go on."
He appears to be wearing exactly the same uniform in both episodes, which makes sense as it may be his workwear.