Chubby Dean Zunker was a boy in the same 9th grade classes as Daria, Beavis and Butt-head at Highland High. He seemed to be an easygoing sort of guy, responding to Beavis and Butt-head showering in "Wet Behind the Rears" with casual amazement. Sadly, "Time Cap" reveals he likes Socko the world's cheapest sock puppet.
When Dean heard Beavis and Butt-head were dead, he cared so little that he started eating a sandwich. ("Beavis and Butt-head are Dead").
"Bus Trip", an episode that didn't feature Daria in a speaking role, indicates he likes Mr. Van Driessen.
A clone of Dean (with different glasses) turns up in Young, Crude, and Gifted named Martin.