Golem (D.Gray-Man)

A Golem in the D.Gray-Man series is a small, flying creature that is assigned to every Exorcist of the Black Order. Every Exorcist that works in the Black Order has one Golem assigned to them. Golems are usually used for sending messages and making contact with other Exorcists. Timcanpy, the creature that is usually seen with Allen Walker, the main character, is a Golem for instance