The Kruncher is a very wide and large, purple fish (almost similar to the shark). He isn't that tall compared to other characters, yet he is still very big. He has pink, spiky fins on his head and across his back. He also wears a white T-shirt and a black bandana. He also drives a blue boat that resembles a shark, with the number "7" on the side.
The Kruncher was first seen after Captain Lutefisk announced his name. He made a joke
directed toward SpongeBob (who was known as The Squish at the time) saying how he should be "afraid" of him. The Kruncher attempts to crash into SpongeBob, but he ends up crashing into a wall. The Kruncher makes another attempt, but SpongeBob collides into him causing The Kruncher to crash into The Cackling Cruiser, losing the Derby.
Nat loves The Kruncher, as shown when he holds a sign saying so (right).
When the Kruncher drives away from SpongeBob, after the latter drives over him, the Kruncher's back fins are missing in that shot. There is another shot that also shows his missing back fin.