"The Rake" is an invention of the 4chan bulletin board, not a real thing. In 2005, an anonymous 4chan member asked for help in creating a new urban legend of a monster, and the community enthusiastically responded.
The Rake, a pale-skinned three-eyed hairless humanoid with a frighteningly large mouth and hinged jaw, was given a mythological back story at Horror Theater, claiming it was described in the 12th century and documented in 1691. Media accounts, the story goes, were compiled in the Northeastern United States during 2003, but have been mysteriously destroyed. In reality, The Rake is documented nowhere but in the 4chan archives, but fictional stories and fan art have been created of The Rake since at least 2006.