Leviathan ~The Last Defense~ (絶対防衛レヴィアタン, Zettai Bōei Reviatan, lit. "Absolute Defense Leviathan") is a Japanese mobile game by GREE. The plot features anthropomorphized dragons as characters. It is a freemium game, as the base game is free of charge but game add-ons can be downloaded for various prices. The game was announced in October 2012 and users who preregistered got a rare card.
An anime television series based on the game and produced by Gonzo began airing in Japan on April 6, 2013. The anime has been licensed for home video and digital distribution by Sentai Filmworks.
Leviathan (レヴィアタン, Reviatan)
Voiced by: Saori Hayami (Japanese); Caitlynn French (English)
Leviathan is a water mage from the land of Aquafall who makes friends with Bahamut and Jörmungandr while searching for her older brother. She lives in a humble cottage by herself and can transform into a water-affinity dragon girl.
Bahamut (バハムート, Bahamūto)
Voiced by: Eri Kitamura (Japanese); Hilary Haag (English)
Bahamut is a fire mage and daughter of the city's leader. She lives in a huge mansion, along with her father and personal maids. She can transform into a fire-affinity dragon girl.
Jörmungandr (ヨルムンガンド, Yorumungando)
Voiced by: Ayana Taketatsu (Japanese); Brittney Karbowski (English)
Jörmungandr doesn't have any elemental magic abilities, but is by far the physically strongest girl of the trio, capable of lifting huge boulders by herself - likely through strength boosting magic and can transform into an earth-affinity dragon girl brandishing a huge axe. She was adopted along with her 3 younger sisters by a team of miners and they call each one of them their fathers.
Syrup (シロップ, Shiroppu)
Voiced by: Kana Hanazawa (Japanese); Monica Rial (English)
Syrup is a fairy who befriends the girls and usually tries to recruit them into the "Aquafall Defense Squad", that she intends to establish to fight back the Toripu. Despite being small, she has quite an appetite, capable of eating several times her own weight in one meal and is very honest, to the point of bluntness that usually gets her into trouble.
Yurlungur (ユルルングル, Yururunguru)
Yurlungur is a large dragon who appears in episode 3, and uses Syrup to translate what he is saying to the girls. He tells them he isn't feeling well. They help him by going inside of his body and defeating a giant Toripu that was making him feel ill. He then thanks the girls and tells them that they can call him anytime they are in trouble.
An anime series directed by Kenichi Yatani and produced by Gonzo, GREE, and Dentsu started airing between April 6, until June 22, 2013. The series uses two pieces of theme music. The opening theme is "Hajimari no Resolution" (始まりのResolution) by Yuki Kanno while them ending theme is "Truly" by PASSPO☆. The series has been licensed for home video and digital distribution by Sentai Filmworks while Crunchyroll streamed the series under the title Zettai Boei Leviatan.
