Eyedol is the fearsome bicephalous boss in the original Killer Instinct.
Eyedol is Ultratech's trump card. Remember the warlords from the Prologue story? Well, Eyedol is one of them. Ultratech's scientists snatched him out of Limbo to do battle with the finalist in this year's Killer Instinct tournament. Little did they realize what kind of power they were releasing when they set Eyedol free from his magical prison...
Eyedol and his greatest rival, Gargos - known only in the modern world to the Monks of the Tiger as the great Spirit they serve - were the last surviving Warlords of ancient times, battling for ultimate control of the land. The heroes of the age joined together to banish them to Limbo, and for 2000 years there they stayed: but now Ultratech's meddlings have resulted in a device that can scan the void for life, and despite their efforts to shut it down before anything nasty gets out, a weakened Eyedol manages to break through at the last minute, right into the company's scheming hands.
Eyedol's ending is actually a Joke Ending that parodizes Blanka's ending from Street Fighter II. The name was changed from Jimmy to Billy.
If he wins, a random woman approaches Eyedol after the tournament and sets into motion a rather strange ending with the following dialogue:
- Woman: "Billy... Are you my lost son Billy?"
- Eyedol: "Why would I be your son?... My name's Eyedol..."
- Woman: "My Son was lost in a car crash... I gave him that club for his birthday....."
- Eyedol: (Eyedol's heads give each other a confused look) "Somehow..........We don't think so." (Eyedol then smashes the woman with his club)
Eyedol resembles a large, two-headed cyclops with glowing read eyes and goat-like legs and feet.