Thecos Bellyshaker is a collector, a type of NPC that exchanges trophies for items.
- "Aye, kids these days...with their bitin' and their boppin', hittin' and a-hoppin'. Will they ever grow up? My boy Sinne's got his heart in the right place, but he's just not cut out for the family business. Anyone who's chocked down one of ol' Thecos Bellyshaker's brand ooze cups knows that the tastiest oozes are found here. I'd send my boy but he's busy doing his own thing. But you...you look like someone who knows good ooze. Tell you what, you go out and find me 7 Blobs of Ooze and I'll return the favor with:"'
 Collector items
 Thecos Bellyshaker
Location: Ooze Pit
Collecting: 7 Blobs of Ooze
| Refined Jelly
|| Uses remaining: 1
Double-click to remove 15% of your death penalty. This item cannot be used in PvP.
| Dungeon Map
|| Double-click to reveal important locations in the current dungeon level.
- His dialogue is likely a reference to Bill Cosby, whom is sometimes known as "The Cos".