Sacred Haven of Debauchery

We were playing Heroes of Might and Magic, and I reached the second chapter of the second expansion pack. Now I'm trying to decide which heroes to take as companions. I have Diken left (I'm afraid he won't level up enough to face the dragon, as the game will end soon =\ I think I managed to get him to level one and turned him into a Bard, or rather, he did it himself!!), and I also have two other options: a super cool Tiefling warrior and a female Elf with three classes). Of course, the first one will be more useful, but who is more interesting to play with????????