Zonko the Zombie Clown

Zonko the clown,
lived under the big top,
Until one day,
from the tightrope he did drop.

Now he has squeaky shoes,
and a fake nose which is red,
and makes funny balloon animals for children,
even though he's dead.

Jiang Shi

The Jiang Shi are a type of animated corpse in many Eastern cultures. Like western vampires they rest in crypts or coffins during the day and only terrorize at night. Traditionally the Jiang Shit absorbs the victim's life essence, or chi, although more modern depictions will show them sucking blood.

Jaing Shi are unable to properly walk as their bodies are stiff with rigor mortis, and must move around by hopping with their arms stretched out.

Revenant

A Revenant is a ghost or animated corpse in medieval belief, often returned to terrorize the living. Those who lead greedy, self-serving lives were likely to return as the walking dead. Revenants were also known to return to enact revenge (for example, against the one who murdered them,) or to give warnings.

In "A Christmas Carol," Ebenezer Scrooge's deceased business partner Jacob Marley returns as a Revenant.

Zombie

The Zombie originated in African / West Indian folklore, when a voodoo priest would seal someone's soul into a clay jar as a way of enslaving them. It turned out this practice of zombie slavery had roots in reality - in Haiti the act of zombification involved inducing a death-like coma with a rare drug. The victim would be believed dead and thus be buried, when later on the perpetrators would dig the affected person up and force them into labor. Victims of the zombie racket would find themselves shunned by their superstitious family and friends, with no where to go except to submit to the will of their captors.

In modern fiction, zombies have become the mindless animated corpse of a person, brought back from the dead in an animalistic state, who's only purpose is to wander around slowly and consume the flesh of the living, especially the braaaaaiiiiinnnsss..... They are usually brought back in masse, have limited intelligence or memory of thier former lives, and can be dispatched with a shot to the head.

Ghoul

Ghouls are born from Arabian mythology, and originally were shapeshifting demons who raided cemeteries and burial grounds to feast upon corpses. In modern fiction they've become a sort of stronger, super-zombie, usually with some modicum of superhuman strength and free will.