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

 * From Season 30, Episode 4 “Treehouse of Horror XXIX”.
 * The description originally stated that he was from "Season 30, Episode 2", but it was actually from "Season 30, Episode 4".
 * This has been corrected with the October 19, 2018, patch update.