Chak
Made for an AD&D game while in tech school, Chak was not something
I would normally do. Part of a raiding party that got decimated by Ork shamans
he was driven mad, believing that he was dead. Living in the forest for a hundred years
the local Dwarves named him Chak (translated as "Crazed Elf'") and basically left him alone.
He had a cloak of the bat and was quite fond of using it. The whole party thought that
the DM was letting me play an elven vampire, it was pretty fun.