He looks mainly like a submarine diver wearing a helmet and clothes. His boat also resembles a small submarine, except it has wheels at the bottom.
Role in episode
He is first announced by Captain Lutefisk, where he responds by pounding his chest. Divin' Bell Dale attempts to ram SpongeBob to eliminate him from the derby, but then ends up getting dirt in his face, blinding him and then causing him to crash.
He then tries to ram SpongeBob one last time, but ends up crashing into an unknown fish, losing the Derby.