A Greneater looks like a Hop Jack in protoform and its velocimorph looks like a Hop Jack with a tail. It has a yellow body with teal armor and green spikes.
Once it hits a large solid object such as a wall or the ground, it's tail lights and starts to burn like a fuse. When the fuse has burned all the way the ghoul Boomer makes a very large explosion twice as large and destructive as a Hop Jack.
- Protoform Abilities - Spits burning embers.
- Smushboom - Timed explosion, powerful targeted blast with shrapnel.
- Burrlock - Spiky protuberances allow slug to stick to almost any surface before it explodes.
- Spikesploder - Shoots spikes from its body as it flies, spikes stick to walls and explode in tandem.
- The Trade (First appearance)
- Shadows and Light
- Mario Bravado
- Keys to the Kingdom
- Back to Blakk
- Slugterra: Ghoul from Beyond
- Slugterra: Eastern Caverns
- Second Chances
- The Fall of the Eastern Champion (Appears in flashback(s))
- The Lady and the Sword
- The Return of the Eastern Champion
- Slugterra: Into the Shadows