Marcus Finch is a former Alchemist, and an acquaintance of Clarence Donahue. He saved Clarence from a group of Warriors, and also is the source of some of Clarence's information on them. Sydney asks Stanton about him, but she claims that he doesn't exist. The Warriors claim that he is a renegade Alchemist, which confuses Sydney since there are no former Alchemists. When she later looks at a picture of Marcus given to her by Clarence, she notices that he has a swirly blue tattoo that appears to cover up his Alchemist tattoo.