COMP

A COMP is a device commonly featured in the Megami Tensei franchise. It refers to the protable computer which many characters have used in order to communicate with, transport, and summon demonic entities. It is one of the most common elements to appear in Megami Tensei games.

In the Digital Devil Story novels
Akemi Nakajima carries a small hand-held computer with him at all times, which he uses to summon Cerberus at any time. Charles Feed also carries a similar device.

In the Devil Children series
In the Devil Children series, the Devil Children use devices called Devil Risers, which are gun shaped computers used for carrying and summoning demons. In addition, Devil Children carry a personal computer called VineCenter, which aids in organizing information and sorting demons.
 * Devil Riser
 * King Riser
 * Messiah Riser
 * VineCenter

In Shin Megami Tensei
The protagonist carries a COMP which he uses to communicate with demons. It houses the Devil Summoning Program designed by STEVEN. STEVEN later upgrades the protagonist's computer so that it can store more demons.

In Shin Megami Tensei IMAGINE
Each player character in Shin Megami Tensei IMAGINE carries a COMP. In the start of the game, the player can choose between two models. Snakeman upgrades the player's COMP once they become a Devil Buster.