I know who AngryViking is!!!
After watching the movie Under the silver lake I started to look for codes, patterns and clues in MovieChat in order to decipher the AngryViking mystery.
After going through countless formulas, reading hundreds of pages of posts, I found the truth. I know, with 81% chance of mistake, that AngryViking is in fact, none other than:AndyKing
Makes sense when you think about it.