Doctor Zombie
Throws potions if left alone with the zombies, healing them. He also has a charming nature which makes some of them stay united. But he can also go berserk, throwing harming potions instead of regeneration/fire resistance/strength/etc.
Adventurer Zombie
This soldier zombie will take your weapon and armor if a zombie manages to kill you while you have the contagion effect active. He can also perform small leaps at you and will spawn when you die with the contagion effect.
Farmer Zombie
Has different variants. Some can spawn without a hoe, and some can have a wooden, stone, iron and rarely some have a golden one. They can also perform small leaps at the player and you can get better loot depending on their variant!
Miner Zombie
Moves pretty fast and usually spawns with a pickaxe in his hand. He has four variants: Stone,Iron,Gold,Diamond. Stone being the worst and Diamond the best. Depending on the valuable in his hand, he can deal more damage but also drop better loot.
Marine Zombie
This zombie is very fast in water and on land and will try to bait you to get you deep into the sea.
Shielder Zombie
Shielder - Does not deal a lot of damage and spawns kinda rarely. It's used to resist high amounts of damage and when hitting him there's a 30% chance your hit will deal only 1/3 of the original damage.
Flusk Zombie
First flying entity of the mod. This entity is a semi-flying one, flying low and then gliding around you. When he gets on land he walks toward you like a normal zombie. He has developed this ability in order to be buffed by the doctor zombies.