Guys, i have a theory..

Koshchei Zombie (PVZ 2 Ancient Russia Zombie concept)

Jack-in-the-car Zombie (PVZ Fusion Idea)

Zombies from Sky City (Veteran version)

Jack-in-the-car Zombie (PVZ Fusion Idea)

Veteran Swashbuckler Zombie

Again for HWaW)))))

PVZ 2 Ancient Russia concept

Frostbite Predator (PVZ 2 Zombie concept)

Huthead Zombie slave (PVZ 2. Ancient Russia concept)