Colby Longbottom Richardson Jack

Background
Colby Jack was military personnel. At some point he was poisoned at a bar and captured by the Grim Reaper. 9 clones were created from Colby, among them was Colby Clone 1. Colby was kept by them in captivity until the reappearance of the mold in 2018.

Rise Of The Mold S1
After escaping from the Grim Reaper's grasp, he returns to his old home. He finds Swiss and saves him from Colby Chunky. After finally defeating Colby Chunky, now in Mega-Mold form, he decides to go to the bar. Feta Cheese, who had been laying on the floor, decides to go with. After returning from the bar, Colby is attacked and captured by Feta, who reveals himself as the Grim Reaper.