On the internet, an "Anon", short for "Anonymous", is someone who doesn't log in to post messages on forums, wikis, imageboards or similar, thus leaving their identity a mystery. A lot of the time Anons remain anonymous in order to be mean to, or "troll", people over the internet.
Characters based on Anons have appeared in several BZPower comic series.
In Jedibot's comic series, an Anonymous is a member of the titular league. He took no major part in the series.