Blue Phantom and Red Phantom

Phantasm (かいじん), is a demon in the series.

History
A Phantasm is something apparently seen but having no physical form; a phantom or an apparition. Could be considered an imaginative mental image. The word comes from phantom but deals with visual impressions alone. Can be used as another word for Ghost

Appearances

 * Shin Megami Tensei: Choujin clan (Boss)

Profile
Once you fetch two soma for En no Ozuno he will then have you fight the Law Phantasm and the Chaos Phantasm (they don't fight you if your alignments match either of theirs) to gain alignment-exclusive weapons (the Kodachi of Light for Law and the Chainsaw Axe for Chaos).