Foul is a race of demons in the Shin Megami Tensei series. Generally the demons of this race can be divided into:
- Creatures with a strange body, either slimey (Slime, Ooze, etc) or with an highly alien body (Backbeard, Old One, Grimies, etc)
- Ghosty beings born from various urban legends (Doppelganger)
- Lowly humans who became demons (Yakuza, Hooligan, Norris, etc), similar to Kyojin.
Like the Haunt demons, most of the Foul demons are weak to Expel (Light) spells. They are the namesake of the Fouls species and are Dark-Chaos.