Eh, he's not too bad as a PC (he's comparatively weak against hordes of mooks, for example), or even a non-combat encounter (where his low Social Defense can be used to talk him into or out of killing someone or something).
As a combat encounter or full-on GMPC? Yeah, I'd quit the game too. The only things that have a prayer (even at comparable Refresh) are really good Evocaters, and people with Wings and ranged attacks. That's literally it, as an NPC he'll flat-out kill anything else without breaking a sweat...which will either leave the PCs dead, or feeling useless in a fight.