Mopp was one of the more 'tech' friendly Armor Hunters. Primary Reebo described him as 'One Crazy Bastard' and was a close friend to all the hunters. Serving under the command of Primary Reebo, they fought many battles together.
In issue X-O Manowar #25 - Burial, Mopp died and was buried on the planet Ba'ek where the Armor Hunters destroyed 2 Armor bearers. This was the battle before the Armor Hunters left for Earth tracking Malgam.