Groundpounder: This zombie spawns at Yekativurg as part of the Aftershock quest received from Peter. It looks like a random Civilian Zombie, but much bigger. Its main ability is jumping into the air and landing, generating shockwaves that damage players and vehicles.
Flamethrower: This zombie spawns at Novobirsk as part of the Scorched Earth quest received from Norbert. It looks like Burner Zombies, but much bigger. Its main ability is propelling fire from its mouth in a continuous wave that does rapid damage upon contact. Their fire can also turn a regular zombie into a Burner Zombie. It dies in a fiery explosion like regular burners.
Lightningstrike: This zombie spawns at Jhavesk as part of the Sparks quest received from Ensign Cliff. It looks like a random Civilian Zombie, but much bigger, and it has electricity particles around it. Their main ability is an electric blast -which it charges up by doing the Spitter's animation- that it unleashes towards The Player. This attack can't be avoided, but you can stop it by simply standing behind a structure.