Gleck sneaks up on Cole in his bed, thinking that he is Lilly, which scares the Earth Ninja. Cole then tackles Gleck and Lilly's necklace pops out. However, Gleck takes it back from Cole and runs away.
Kai and Zane spot the necklace around Gleck's neck and deduce that he is the creature Cole saw in his bedroom. After that, they ask how he got the necklace, Gleck tells Kai and Zane that Lilly gave it to him years ago, and they asked to have the necklace, he gives it to them after they promise to give the necklace back. After Kai and Zane realize who "Gilly" really was, Gleck becomes happy as he thought that they knew her. When he asks her where she is, they sadly tell Gleck that Lilly died, which makes Gleck very sad.
While the other Geckles are watching the slug race, Gleck pulls Kai and Zane aside. He tells them that he doesn't think the Munce stole their blade, and that he was only looking for "Gilly" when he entered Cole's room before. At the request of Zane, he shows them his locket, and they realize that Gilly and Lilly are the same person. Gleck is excited that they know who Lilly is, but is saddened to hear that she had passed away a while ago.
Later, he demonstrates swinging across the lava to safety for the ninja.
Gleck and the others take refuge in the Geckle Strong-Cave.
After Lilly saved the Geckles and Munce from Grief-Bringer, she gave Gleck a necklace which has pictures of her and Lou. For years Gleck wished that Lilly would come back. And when Kai and Zane told him that Lilly had died, it made him very sad.
- 146. "Into the Dark"
- 150. "Trial By Mino"
- 155. "Grief-Bringer"
- 157. "The Darkest Hour" (no lines)
- 159. "The Upply Strike Back!" (no lines)
- 160. "The Son of Lilly" (no lines)
- He has Ginkle's appearance in the show while Ginkle has his, though the hood color is different in the show.
- Despite having Lilly's necklace around his neck, he has no accessory or print of it on his minifigure.