Do Mojo bonuses stack?

[MunchkinMan]

Originally Posted by MrMooky

Say I am an Atomic Zombie, and I am receiving help from someone who is also an Atomic Zombie. If they monster we are facing gets +5 against Atomic Zombies would it just be +5 total, or would it be +10?

This is actually covered in the rules, which is why it's not in the FAQ. Specific Monster bonuses against a Mojo and bonuses for a Mojo do not stack if two of the same Mojo are in the combat, unless, of course, the Monster says so.

Originally Posted by Munchkin Zombies Rules

The special abilities or vulnerabilities of the monster also apply to your helper, and vice versa. For instance, if you are not a Voodoo Zombie yourself, and a Voodoo Zombie helps you against the Nun, the monster is -2 against you. But if you are facing the TaxMan and
a Voodoo Zombie helps you, the monster’s combat strength is increased by 5.

This might be clearer in other sets rules, but the implication is that if you weren't already a Voodie Zombie (and the penalty had been applied to the Monster), it wouldn't get applied again.