Wicht Warden is an unlockable character within Call of Duty: WWIIZombies. It can be unlocked by completing a full challenge set, in this case being the "Cold Blooded" challenge set.
The Wicht Warden is also featured in Call of Duty: Mobileas a playable character.
Challenges[]
The Hilt - Rescued an ally, began your journey (Search and rescue)