How dangerous it is
180 HP, bites for 1 every 3 s (20 a minute)
The older kinds are still in the game's files. A new game never sends them; a save started on an older version of the game may still meet some of them.
Slips past the 
Mechanical Chainsaw 70% of the time.
Zombie Horde Intensity
| Setting | HP | Bite | A minute |
|---|---|---|---|
| Weak | 135 | 0.5 | 10 |
| Standarddefault | 180 | 1 | 20 |
| Strong | 225 | 1.25 | 25 |
| Very Strong | 270 | 1.5 | 30 |
A siege wave can multiply these again; its page says by how much.
From the game files3
Player 9008
| ID | 9008 |
|---|---|
| Name | Player_Name_9008 |
| Name_Local | 爬行者 |
| Player | Zombie_Crawler |
| ClassType | 4 |
| SpineName | Zombie_Player/PF_ZmobieSS10 |
| Scale | 1 |
| LinkAttr | 9008 |
| ColliderArgs | [0.6,0.4] |
| LogicConfig | Agent/ZombieAI |
TowerZombieType 9008
| ID | 9008 |
|---|---|
| HP | 180 |
| Attack | 1 |
| MoveSpeed | 0.4 |
| AttackSlots | 1 |
| AttackInterval | 3 |
| AttackRange | 0.5 |
| SkinPool | ["Zombie_Player/PF_ZmobieSS10"] |