From Hellgatewiki.com

Every game with undead monsters has to have some sort of zombie, and Hellgate: London is no exception. There are zombie-looking humanoids with ripped clothing and a cannibalistic hunger for living human flesh, fat zombies, female zombies, skinless zombies, rotting, quadrupedal zombies, and more. The basic humanoid with rotting skin version is the most common, and you might as well prepare yourself now, since you're going to have to cut, shoot, blow up, and magic your way through thousands of them on your quest to defeat evil in post-apocalyptic London.

Happily, the zombies in Hellgate: London are not your usual corpses returned to life and gifted with an unnatural appetite for brains. They're not even undead! According to the game fiction, the zombies in Hellgate: London are humans who have been mutated and corrupted by a demon growing within them. They're still humans, technically, but in their madness they are beyond salvation and must be destroyed. In a cruel twist, they retain their human souls, and can still fall prey to parasitical monsters like the Soul Reaper, which flies around and sucks out their last bits of tasty humanity.

Hellgate: London's zombies aren't your usual shuffling idiots either. They can move as quickly as your character, so be prepared to engage or escape as soon as you see these guys.

Name: Zombie
Caste: Necro
Rank: Lesser Demon
Subtypes: Female Zombie, Fat Zombie
Special: Spawn in packs. Faster than you expect.

Attack Type: Melee
Range: 2m
Damage Type: Toxic

Statistics
Monster Lvl	1	2	3	4	5	6	7	8	9	10
Hit Points	5	6-8	??	??	??	??	??	??	??	??
Damage	3-5, 4.18 av.	4-6, 4.92	4-7, 5.58	5-7, 6.23	6-8, 6.86	??	??	??	??	??
Armor (% Damage Reduction)	0 (0%)	0 (0%)	??	??	??	??	??	??	??	??

Statistics
Monster Lvl	11	12	13	14	15	16	17	18	19	20
Hit Points	??	??	??	??	??	??	??	??	??	??
Damage	??	??	??	22-29, 24.3	??	??	??	??	??	??
Armor (% Damage Reduction)	??	??	??	??	??	??	??	??	??	??

• See all the Zombie shots in our image gallery.

There are pieces of concept art and even renders for a huge variety of zombie heads, but all we've ever seen in the game are the basic rotting, inhuman skull heads. It looks like Flagship decided to just go with the traditional rotting-skull style zombie appearance, though the newly-added Fat Zombie and Female Zombie give some variety.

Community Day Update

Flux, admin of the Unofficial HGL Site, reported on Zombies after some HGL play time during the 2007 Community Day event. (Registration required to read Flux's full four-page mega report.)

Zombies are pretty much the default; they see you and lurch towards you, accelerating to running speed as they charge. It's not their foot speed that makes them slow, it's their reaction time. Aside from the neutered zombies you encounter during the brief tutorial level, (which don't attack at all) the rest of them are just about what you expect. Perhaps a little faster. I did encounter Fat Zombies and Female Zombies as well, and they were all just called "zombie." If they behaved any differently than the normal skinny, mostly-naked ones, I didn't notice. It looks like the fat and female ones are just in the game for visual variety, and not as higher power or different types of zombies.