Maurice only appears in the episode "Dunces and Dragons." He and his wife are the judges of the annual Jousting Tournament, held at Medieval Moments. He appears helping SpongeBob and Patrick up after they had a great fall.
He is a green fish, and is seen wearing a large red robe, and underneath it is a purple garment, with a gold belt going around it. He wears a golden crown on top of his short, brown hair.
"ZzZzZzZ, WHAAA WHATT??"
"IT APPEARS THAT THE PINK STARFISH, AND THE YELLOW SPONGE, ARE OUR LUCKY CONTESTANTS"