Tom at his home.

Tom Smith 
is a minor character in the series Spongebob Squarepants. He is known to have the famous line "Chocolate" and is the crazy chocolate fish as well as having a bipolar disorder over other foods and drinks. Though he appears in many episodes, he isn't a main character because he hasn't had a major appearance. He is only an acquaintance to Spongebob and his friends, but is shown to be friends with Fred Rechid. He is brown and wears a purple shirt and blue pants. He is married to Martha Smith, and Isabelle is his daughter. Tom shares the same first name with Spongebob Squarepants's voice actor Tom Kenny.