Hmmm well The alchemist would be much like a sage or the sister in the fact that he's not a front line fighter, and he fights from a distance. Unlike the other two however he isn't in any way magicly gifted, he fights using chemical formula's and potions meaning he can throw fire like a sage and heal a burn like a priestess but he doesn't have to worry about exhausting himself with his efforts.

However his ability to do this is completely reliant on his supply of time and basic materials to make the potions and salves, the variety of potion is also reliant on time and prep.