Don't know anything about Gorf, since I ditch Mazzy after doing her individual quest, but here's off from gamefaqs:
OTHER: Mazzy and Gorf (from Vladislav Brkic, and a number of others)
Copper Coronet - Slums (AR0406, x 200 y 1400)
I was selling some goods to Bernard in the Copper Coronet, after
which I left through second door. Outside an Ogre pit fighter
called Gorf the Squisher started talking to Mazzy and said how
halflings don't know how to hit. Then he started hitting some
commoner and talked to Mazzy again and challenged her to a duel in
the Copper Coronet pit. When I entered the Copper Coronet Mazzy
talked to pit manager Surly and he sent us to talk to Gorf's
girlfriend Bunkin. After that I then talked to Festule the
Alchemist (same area x 915 y 1240) and bought a potion to disable
Gorf for 400gp. He also said to try giving it to Bunkin. Then I
talked to Bunkin (x 1200 y 1820), complimented her and she
complained that Gorf never does that, so I gave her Festule's
"love" potion and said that it will solve her problem (for this
the party gained 11,500 exp).
Then Gorf arrived and said that his ale tasted funny but still
entered the pit. Mazzy killed him easily (2500 xp). Then she said
something like "Virtue has won again" and party received another
5000 exp.