Upgrade Your Zombies

How do we make zombies threatening? By "we" I mean "not me," because I think zombies are dumb. Here are a few ideas.

Mechs
Power armor
Muscle Tracers
Cataphracts
Mobile Suits
The Master Zombie
Silhouette Knights
Zombie fusion
Arm Slaves
Variable Fighters
Level drain

A Test of Intellect

Idiots: Technology and magic should oppose each other!
Geniuses: Mechs with wizard staves!