His job is to prevent death, not cause it.....really.
Here we have Cleric, his primary role is to keep the party alive and healthy and support in any way he can.

Incomplete back story-
Cleric is a member of a divine organization located in the frozen northern half of the continent, a while away from Knight's kingdom, where he is trained to heal the injured and help the weak. One day while he was making his way back from a small village he spotted a strange, dark creature making it's way into a snow covered forest. Once he got back to his hometown, he noticed three travelers approaching the main gate: Knight, Rogue, and Mage. Knight had been badly wounded and were in need of a healer; Cleric quickly got to work. Upon hearing their stories of what they saw on the mountains of strange shadowy monsters, the Nether monsters, Cleric agreed to travel with them. With his general knowledge of all sorts of monsters and alchemy, and his healing abilities, he knew he could be of assistance and put a stop to these dangerous fiends.

Personality-
Relatively calm and level headed, Cleric is ready for just about any obstacle the group should come across. He tries to impress Mage a number of times, though he never succeeds. The only other thing that can break his composure are bugs.