It looks like this is going to be a little harder then Shark was expected.
So this guy can command the armies of Hell. Just how many is that? Can he summon them all to him right here and now? Does he have to open a portal and have them run through? Maybe they could just beat on him and keep him from issuing commands, or at least keep him rom holding the portal open.
In any case, Shark was a fool if he thought this guy was going to be as big a pushover as the others were. He saw what they did to the other guys, but he was still confident in his ability to win, or at least to slow them down long enough to be useful to the princess.