Hans is a pinkish white hand, with the fingers folded together. His sleeve can be presumed as part of a naval jacket (which would make sense, considering the theme of the show). He has a German accent.
In the theme song of the show, he can be seen briefly, handing SpongeBob his pants.
This episode marks Hans' first role in the series. He appears in cutscenes, where he uses SpongeBob and Patrick as cleaning tools. He uses SpongeBob to clean to cure him of his sickness, and he uses Patrick to clean as punishment for impersonating a doctor.
SpongeBob realizes how he chose the wrong Mr. Krabs, and goes out to retrieve the real one, which he had covered with tartar sauce and served with fries. However, upon exiting the Krusty Krab to retrieve him, he sees that Hans is trying to eat him with a fork. Mr. Krabs keeps him at bay with a fry until SpongeBob grabs the cart and wheels him in, with Hans disappearing into the sky.
Hans is the hand that can be seen in the New Sponge commercial. He uses SpongeBob to scrub dirty surfaces. However, SpongeBob resists Hans when he wants to clean the grotesque toilet with him. Later, when SpongeBob goes to work at the Krusty Krab again, Hans can be seen using the bathroom there.