Anorak

"Hello. I am James Halliday. If you're watching this, I'm dead. Before I died, I created what we in the biz call an "Easter egg. A hidden object in a game that gives special powers to whoever discovers it. The first person to find the egg I've hidden somewhere inside the OASIS will inherit my stock in Gregarious Games, currently valued in excess of half a million do... Uh, half a trillion dollars' worth, and total control of the OASIS itself. In the form of my avatar, Anorak the All-Knowing, I created three keys. Three hidden challenges test for worthy traits revealing three hidden keys to three magic gates. And those with the skill to survive these straits will reach the end, where the prize awaits."

- Halliday hosting a video when he’s dead.

James Donovan Halliday (1972-2039) is the main character and tech industry businessman in the backstory of Ready Player One. He was the creator of OASIS, a massive online simulation used by billions of people in the story's dystopian future setting. When the story begins, the late Halliday has just willed a major prize to whosoever finds a unique, hidden easter egg in his VR realm, the OASIS. The terms of the will would give the finder his half-trillion-dollar fortune, along with administrative control over the OASIS itself.

He was portrayed by Mark Rylance.

Quotes
"Off you go, keys."

- Anorak telling the keys to go