Complex sentence: Finally free of Grimlord's control, both Troopers fought off Wolfbot, Crabor, Bugbot, Venobot, and the Mutant Skugs together; and eventually at the lab, JB was restored to normal again.
Split into simpler sentences: Finally free of Grimlord's control, both Troopers fought off Wolfbot, Crabor, Bugbot, Venobot, and the Mutant Skugs together. Once they got back to the lab, JB was restored to normal again.