CorpusEditDroid #1 was build by Zarvous from a damaged battle droid. He was given a newly designed arm because, according to Zarvous, regular battle droid arms didn't move very well. His new arm allows Droid #1 to properly use melee weapons and aim more precise at targets.
CerebrumEditDroid #2 was a expirement of Lord Zarvous. Not much is known about his history or purpose, only Zarvous knows why he was build.
BrachiusEditDroid #3 was build by Lord Zarvous his purpose and history are unknown. But his left arm has been replaced by a gigantic claw made out of battle droid pieces.
ShadarEditThe Skeleton was an expirement of Lord Zarvous. It's unknown what exactly he is, but he looks like a skeleton...
Lyres KulewakkEditA mysterious Jedi with a dark past. Only very few know where he came from.