Not to be confused with Donnie.
Donald the Shark is a shark who first appeared in the "Anchor Arms" commercial in the episode "MuscleBob BuffPants."
Donald is tall and light gray. He is very muscular and appears to wear Anchor Arms and also wears tight red shorts. He has white eyes with black pupils and sharp teeth.
Donald is the one who advertises the anchor arms that Spongebob purchased. Donald states that he used to be a "Wimp" where he then shows a picture of himself wimpy.
- It can be assumed that he does not have real muscles.