I tried making a Zombie, too. I don't have that many parts but I tried and I think it's working quite well already.
AR: War Monkey
WD: 10 or 8 Wide (both worked pretty similar)
SG: SG (Bearing Version 2) (either right or left)
BB: Defense Grip Base 2
worked well against my best Defense Combo:
AR: Smash Turtle
WD: 10 Wide
SG: Neo Right SG (In this case the Zombie had left spin of course)
BB: Metal Sting Base
The Zombie always beat this combo so far.
AR: War Monkey
WD: 10 or 8 Wide (both worked pretty similar)
SG: SG (Bearing Version 2) (either right or left)
BB: Defense Grip Base 2
worked well against my best Defense Combo:
AR: Smash Turtle
WD: 10 Wide
SG: Neo Right SG (In this case the Zombie had left spin of course)
BB: Metal Sting Base
The Zombie always beat this combo so far.