Theodos

Theodos was one of the ancient Asari that got petrified by a Medusa long ago.  He is the mage in charge of watching over Ingrid.  During his time being petrified his left arm was ate off by a Basilisk.  Eventually he is able to combine elven, dwarven, and gnome technologies to create a bracer that goes on the stub of his upper left arm that allows a magic limb to come out from the device.