Xylem

"YOU live in the Crab Nebula. YOU."

- 's unlock message.

 is a limited-time premium character that was released on October 17, 2018, as part of the Treehouse of Horror XXIX Promotional.

Trivia

 * Even though the description states that it is from "Season 30, Episode 2", it is actually from Season 30, Episode 4.