In Horns, Ignatius Perrish (Daniel Radcliffe) wakes up after a drunken night to find horns growing from his forehead. He also discovers he has the power to compel people to reveal their deepest secrets, which comes in handy for finding the truth behind his girlfriend’s death.
In Panty & Stocking with Garterbelt, Scanty Daemon is the elder of the demon sisters, who’s characterized by her green spiky hair and devil horns. As Panty’s rival, she can transform her underwear into weapons, a pair of revolvers that can be combined to form a shotgun. A body painting tutorial can be found here.
In Panty & Stocking with Garterbelt, Kneesocks Daemon is the younger of the demon sisters, who’s characterized by her light blue ponytail, fangs, and horn. Like her rival Stocking, she can transform her stockings into weapons, a pair of scythes that she spins around her body. A body painting tutorial can be found here.
Hellboy (Ron Perlman), real name Anung Un Rama, is a demon summoned to earth by Nazi occultists. Don’t let his horns, red skin, tails and cloven hooves fool you. He’s well meaning and actually has a sense of humor.
In the manga and anime adaptation Black Butler (Kuroshitsuji), the demon Sebastian Michaelis has agreed to help the young Ciel Phantomhive in exchange for his soul. In the meantime, he acts as Ciel’s butler with vim and vigor.
In The Exorcist, Regan (Linda Blair) is a young girl possessed by the demon Pazuzu and requires an exorcism to free her. Although you may be able to recreate Regan’s demonic look, it isn’t quite the same without the head spinning and projectile vomiting.
Raven is a half-demon, half-human being who joins the Teen Titans. She uses her powers of teleportation, astral projection, and empathic healing to protect Jump City from various villains, which includes her father Trigon. This costume will require a bit of DIY to replicate her cape pin and jeweled sleeves in addition to modifying the necklace into a belt.