John (Character)

:For the boss of the I AM ERROR room, see John (Boss).
John is a character unlocked by holding the Book of Revelations and having a Cube of Meat level four. He is unique in that playing with this character will make the Horsemen appear more.
==Unlockable Items==
* Collect 10 spirit hearts and beat Mom's Heart/It Lives! with John in a single playthrough.
Foefire- Complete Cathedral with John. (And yes, that is a reference to Guild Wars)
Stride of the Forgotten- Complete Sheol with John.
Book of Seven Seals- Complete "the Womb 2" with John.
John's Quill- Complete "The Chest" with John.
Death's Scythe- Die 50 times with John.