Not really an overpowered character; I'd put him on par with Marvel's 'Earth-616' Hercules; Hercules, both in the Marvel universe and in his native mythology in our world, was a demigod. Lifting capacity 100 tons, durable enough to bounce bullets fired from mundane firearms with simplicity, could endure multiple hits from the Hulk, ect.

The OOC reaction to Skall's character makes me assume that the champions are simply on the same playing field (in a figurative sense) as entities like Steve Rogers (Captain America) or some of the X-Men (this is tricky however; Magneto is a borderline demigod IIRC). I don't have the Arena tier chart on hand, but if we go by TV Tropes '[url=http://tvtropes.org/pmwiki/pmwiki.php/Main/SuperWeight]Super Weight[/url]' system, I'd put Light's expected champion power level somewhere between super weights 2 and 3.

I might as well not finish Sovereign until Light comes and gives us a ruling on this. He doesn't have access to magic or adequate ranged attacks, but his monotonous combat capabilities and physical abilities make him out to be a highly-destructive [url=http://tvtropes.org/pmwiki/pmwiki.php/Main/LightningBruiser]lightning bruiser[/url] that progressively grows more dangerous the longer a battle drags on.