Can you list any you know of.

The green hulk

Gray hulk

Red hulk

She hulk

@robinnight:

From the top of my Head

Savage Hulk (The one we all know and love!)

Grey Hulk (can talk and stuff but isn't as strong)

Joe Fix it (Similar to grey Hulk but a wise cracking guy with a gangster style attitude).

War Hulk (Appocalypse Horseman)

World War Hulk (Green Scar)

World Breaker Hulk (Heart of the Monster arc, the most powerful incarnation of Hulk we've seen...yet. Lives up to his namesake)

Mindless Hulk (fought Onslaught, had Jean grey Shut Banner out)

Zen Banner (Banners body but the strength of the Hulk! Techincally not a Hulk persona)

Maestro Hulk (the Douche villain Hulk from the future)

Devil Hulk (The manifestation of his dark pshyche)

Professor Hulk (body of Hulk but Mind of Banner)

Savage Banner (Technically is a Hulk persona as it's the mind of Hulk...with the body of banner)

Gravenge Hulk (Fought the final fight against Red Hulk, Has strength comparable to Green Scar because both Banner and Hulk are in synergy, though none of that emotionally fueled rage that green scar demonstrates)

Red Hulk and She Hulk aren't personas, they are Hulked out characters.

Nul

Lou ferrigno

Bump.

Savage Hulk (speaks in third-person, has the mind of a three-year old or somethin'.)

Gray Hulk (aggressive, confident, cunnin', etc.)

Gravage Hulk (same personality as Gray Hulk an' also the physical raw power an' appearence of Savage Hulk, also sometimes has the intelligence of Banner. He can also be quite gruff.)

Professor Hulk (seems ta be really similar ta Gravage Hulk, but also seems ta get weaker the madder he gets an' turns into Banner with Savage Hulk's mind if he gets too angry, called Savage Banner.)

Maestro (a future, alternate version of Hulk.)

Mindless Hulk (was created from Banner's nightmares if I remember right.)

Green Scar (pretty much Gravage Hulk at a higher level of rage.)

Doc Green (dunno much about this one. Seems ta have the physicals of Savage/Gravage Hulk, but also seems ta be a whole lot smarter.)

War Hulk (one of Apocalypse's Horsemen.)

Those're the ones I know most about.