STUDIO4°C (株式会社スタジオよんどしい Kabushiki-Gaisha Sutajio Yondo ShiI) is a Japanese animation studio founded by Eiko Tanaka in 1986. The name comes from the temperature at which water is most dense.
The studio made a few anime such as the Spriggan, Memories, Princess Arete, Halo: Legends, Genius Party/Genius Party Beyond, Mind Game, Tekkon Kinkreet, Thundercats (2011), Transformers: Animated, Berserk: Golden Age Arc and current DC Animated Universe films, such as Justice League: The Flashpoint Paradox.
Studio 4˚C is responsible to join the production committee only accepting for the Harmony Unleashed: Human Ponidox Continuum Shift anime series produced by Sunrise. (except NeoWave and the Rebirth films).