Head - GTG cast
Torso - Chuckles
Waist - Cutter (I think)
Arms - J. vs C. Recondo
Legs - NF Tunnel Rat (ARAH)
Jacket - V.vs.V Hannibal
Left hand - AoD Pitwitch (cast)
Brain - McFarlaine monster playset accessory cast.
There's no point writing a bio for him - he's just a generic zombie, cobbled together from 100% fodder.
The whole figure turned out really well - the head has a great range of movement, and the shoulder joints can move freely without being restricted by the jacket. The guts are copied from an anatomy model, so they should be correct. There are modifications to every individual part of this figure.