Mechanic Zombie (PvZH)

Mechanic Zombie is a premium Rare zombie card in PvZH added in Card Swap (PvZH DLC), and he's a member of the Hearty class. He costs 6 brains to play and has 4/4 for his stats. His special ability is that when he's played, he restores all Vehicle Zombies to full health. He corresponds to the Vehicle Tribe for obvious reasons.

With
Mechanic Zombie is a very useful zombie if your going to make a deck based around the Vehicle Tribe due to being able to fully heal them back to full HP. However, it's recommended to be careful with Mechanic Zombie - if you play Catapult Zombie (PvZH), don't buff it or use Mechanic Zombie unless your not relying on it's special ability.

Mechanic Zombie is very recommended if your using Mall Cop Zombie or Zomboni due to the heal plus armored 1.

Against
If the opponent has a very low health Vehicle zombie, it's recommended to quickly destroy it before they get to play Mechanic Zombie as it could fully heal the vehicle zombie which could lead to your doom if it's something like Mall Cop Zombie. It's also recommended to avoid bouncing Mechanic Zombie at all cost, as then it gets to play it's ability again.

Trivia

 * The Artwork for Mechanic Zombie (and basically his name too) was adopted from Mental's Drawing Dump.
 * The description for Mechanic Zombie is a reference to Newspaper Zombie's almanac entry in PvZ1 & PvZ2.