He was a mechanic and was actually a very mean Thundercat when the cameras were off.
"Bitch ass Lion-o. He's gonna try and tell me, Panthro fix the water pump on the Catmobile. F*CK HIM! What does he think I am some kinda pussy. Let's see him try to change the oil in this damn thing! Hand me a Phillips, Snarf" Panthro exclaimed.