Getting to him alone would be a major challenge for a warrior alone, and the castle is stocked full of froggies..and at 43 you wouldn't have a chance at single pulling him i don't think...
I think you would just die a horrible death and be on a nasty CR. But if you brought a group with you you could rack up some major XP there.
Hey, I've seen some wacky stuff in EQ, where something will be a class that's a huge suprise based on the name. I can't remember any of the REALLY good ones (me tired, late at night and the servers kept crashing today, on a full-party CR in LGuk <ewwww>), but for example: the 'Crusaders' (pallys, right?) of Cabalis (hmm, Iksar can't be pallies) are ShadowKnights of Cazic Thule. Makes sense in context, but when you first meet them, you might be suprised. I wish I could think of the GOOD examples, but like I said, my melon's a real pina colada right now. /boggle self