He is a dark purple fish with a light blue dorsal fin and a light brown mustache. He wears a gray suit and a dark olive green tie.
In The Executive Treatment, Stockholder Eel was frustrated with Patrick, and to show his rage, he ripped off his mustache. Stockholder Eel yells for Jenkins, and asks him for a mustache. Jenkins then rips off his own mustache for his boss. Stockholder Eel rips it out of Jenkins's hands and attaches it to his face.