— Incidental EHS5, "Walking Small"
He is an olive green eel with a light green dorsal fin running down his back. He also has a small light brown straw fedora with a purple stripe on his head. His body is long and wavy in appearance.
In "Enchanted Tiki Dreams," he is bright green with a cyan dorsal fin. He appears notably shorter in this appearance and his body is more straight with a slight curve.
Role in series
He steals SpongeBob's ice cream cone in line for the stand by sliding through his holes. When SpongeBob is not assertive enough, Plankton gets inside his mouth and yells at him, demanding he hands over the ice cream or else "every waking moment of [his] life will be filled with pain and misery." The eel bursts into tears, and tosses the ice cream cone into SpongeBob's face as he runs off bawling. Plankton passes them off to SpongeBob as "tears of joy", erroneously stating he was happy to see SpongeBob being assertive.
"Enchanted Tiki Dreams"
He appears as one of the members of the Empty Head Society.
He is one of the guests attending SpongeBob's party.
- In "Walking Small," he is seen to have the power to stretch over long distances. This may have meant to be done, as eels are usually long and skinny.
- Plankton was the only one to give him a nickname (Pencil neck).