You see a Diseased Fred.
- You will suffer the same fate as I do!
- The pain! The pain!
- Stay away! I am contagious!
- The plague will get you!
Notes
Is an infected human. He is the strongest of the diseased humans.
Abilities
Melee (0-150+ and 
starting up to 4 hp/turn)
Distance Life Drain (65-80+)
Paralyze Poison Exori (100-170+)
Self-Healing (?)Damage Taken From Elements
Physical 
Death
Holy
Ice
Fire
Energy
Earth
Drown
Location
Alchemist Quarter, here. Since the Summer Update 2012 you can reach him easier by a ramp directly from +1, instead of having to walk past the pit with Bog Raiders.
Behaviour
Like a Bog Raider, but he runs in low hp.
Strategy
Same strategy you would use for a Bog Raider, run around and shoot him.