Momo Belia Deviluke (モモ・ベリア・デビルーク Momo Belia Deviluke?) is Nana's twin, as well as Lala's younger sister. As Gid's daughter, she holds the title of "Third Princess of Deviluke" as she is the youngest out of his three daughters. In To Love-Ru, she used to be seen with Nana all the time, but in To Love-Ru Darkness, they are not together as often as before. This is because while Nana became friends with Mea Kurosaki, whom she hangs out with more often, Momo becomes more attached to Rito and focuses on expanding "The Harem Plan" she has for him.