Anon
What is Anon?
True/Old Anonymous (or Anonymous or Anon) refers to a personification of anonymous users on 4chan as a faceless green man in a suit.
Contract Address:
Origin
As a personification, Anonymous was created on 4chan sometime before 2006. An early appearance of Anonymous is in the flash movie Sageman [1], where Anonymous is shown fighting Sage man. Another flash movie also includes Anonymous, and was uploaded to Newgrounds on January 21 2006 [2].
The appearance of Anonymous is believed to have been inspired by The Son of Man, a painting by René Magritte.The green color of Anonymous' skin may have been based off the green apple covering most of the man's face
René Magritte, The Son of Man, 1964, Restored by Shimon D. Yanowitz, 2009
/b/ Uses
Mainly used in arguments of how /b/ or Anonymous was better before Project: Chanology, here is afew examples of it in action.

There is many other uses where "Old Anonymous" is used as a filler for exploitable content or templates including Fsjal,
and Card Crusher.
/f/ Uses
The majority of use in /f/ would have to be "Party Hard" Flashes, where they take a flash that looks like this
Geat flash example would be this "moot roll" where he plays the bartender.