OK, so here they are.
Zombie: Gains a bucket
Conehead Zombie: Cone turns into ice, making it have 80 health
Buckethead Zombie: Split into 25 Normal Zombies
Flag Zombie: Summons Normal Zombies every second until killed
Rock Thrower Zombie: Throws a boulder that damages the whole screen by 5 damage and if it lands on a plant, the plant is dead
Military Zombie: throws a goo grenade that stuns plants for 10 seconds
Shield Zombie: gains a bucket and keeps the shield
Runner Zombie: Runs faster
Zombot Moletron: Nothing
Zombie Knight: Gains a sword and slices palnts in its path and the sword cannot instantly kill a tallnut
MORE EFFECTS SOON
go to this link to see the giga effects.