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 episode, the Stockholder Eel is frustrated with Patrick, and to show his rage, he rips off his mustache. The Stockholder Eel yells for Jenkins, and asks him for a mustache. Jenkins then rips off his own mustache for his boss. The Stockholder Eel rips it out of Jenkins' hands and attaches it to his face.