Phineas Flynn29789 is a former user that created the ERB Wiki from a facebook profile that was connected to wiki. He deleted the facebook account, meaning he can no longer use his account. Nobody really knows anything about this mythical man. Even though he was the creator, TheSteelerNation2 runs most of it.
His name comes from the character Phineas Flynn from the cartoonseries Phineas and Ferb.