|Place of origin:||Ravolox|
|Appearance:||The Mysterious Planet|
|Main actor:||Timothy Walker|
- You may be looking for the species.
Grell was a guard for the UK Habitat in c. 2000000. He discovered that Merdeen was helping people escape to the surface, but before he could tell Drathro, Merdeen shot and killed him. (TV: The Mysterious Planet)