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 need to decide who to take as companions. I have Diken left (I'm afraid he won't level up enough before the dragon appears, because the game will end soon. I think I managed to level him up once and killed him as a bard, or rather, he did it himself!). And I also have two other characters to choose from: a super cool Tiefling warrior and a female elf with three classes. Of course, the first one will be more useful, but who would be more interesting to play with? And also, everyone, be quiet for a moment so that someone (Siv) can come and answer my question.