Ms. Scarlet from "Clue"
Erza Scarlet, character in the manga and anime, 'Fairy Tail'
Scarlet Benoit, character in the Lunar Chronicles
Scarlet, character in web series "RWBY"
Scarlet Begonias is a song by the Grateful Dead
Scarlet Witch, Marvel character (Wanda Maximoff)
Scarlet Overkill, main villain in upcoming Minions movie