Studio DEEN

Studio DEEN is one of the oldest active anime studios and was established in 1975 by members of Sunrise. This has led to collaboration between the two companies in their works and to this day Studio DEEN can be found in the credit listing of Sunrise anime. They are one of the more prolific anime studios and as a result often have budget constraints.

A full list of their projects can be seen here.

Works produced by Studio DEEN:

 * Zero Seven Ghost
 * Amaenaideyo
 * Angels Egg
 * Axis Powers Hetalia
 * Beyblade
 * BlazBlue Continuum Shift Anime cutscenes
 * Dragon Crisis
 * Fate Stay Night (TV)
 * Fate Stay Night: Unlimited Blade Works
 * Fruits Basket (co-produced)
 * Get Backers
 * Giant Killing
 * Ginga Densetsu Weed
 * Gravitation
 * Hakaima Sadamitsu
 * Hakuouki
 * Hell Girl The Two Prisoners and The Cauldron of Three alongside Aniplex.
 * Initial D (Third Stage)
 * Junjou Romantica
 * Kore wa Zombie Desu Ka
 * Kyou Kara Maou
 * The Law of Ueki
 * Maison Ikkoku
 * Maria-sama ga Miteru
 * Mobile Suit Victory Gundam (Co-production with Sunrise)
 * Mouse
 * Mythical Detective Loki Ragnarok
 * Nurarihyon no Mago and Nurarihyon No Mago: Sennen Makyou
 * Ranma One Half
 * Rave Master
 * Read or Die (OVA)
 * Rurouni Kenshin (Replacing Studio Gallop)
 * Rurouni Kenshin: Tsuiokuhen
 * Rurouni Kenshin: Seisouhen
 * Samurai Deeper Kyou
 * Seitokai no Ichizon
 * Sekaiichi Hatsukoi
 * Simoun
 * Shion no Ou
 * Super Radical Gag Family
 * Tactics
 * Tekken the Motion Picture
 * Touka Gettan
 * Urusei Yatsura (episode 109 to end)
 * Vampire Knight
 * When They Cry
 * Higurashi no Naku Koro Ni
 * Umineko no Naku Koro Ni
 * Weiss Kreuz (With TMS Entertainment)
 * Yami To Hon To Boushi No Tabibito
 * You're Under Arrest
 * Zenki

Additional work by DEEN include:

 * Agent Aika (Finish & In-Between Animation)
 * Akira (Animation Cooperation)
 * Another (In-Between Animation)
 * Aura Battler Dunbine (In-Between Animation)
 * Bleach (Animation)
 * Batman Gotham Knight (In-Between Animation)
 * The Brave of Gold Goldran (Animation)
 * Canaan (In-Between Animation)
 * City Hunter (Finish & In-Between Animation)
 * Code Geass (In-Between Animation)
 * Cowboy Bebop (In-Between Animation)
 * Darker Than Black (In-Between Animation)
 * Detective Conan (In-Between Animation)
 * Ergo Proxy (In-Between Animation)
 * Eureka Seven (In-Between Animation)
 * Fairy Tail (In-Between Animation)
 * Fist of the North Star (In-Between Animation)
 * Fullmetal Alchemist: Brotherhood (In-Between Animation)
 * Grave of the Fireflies (Finish Animation)
 * Halo Legends (In-Between Animation)
 * Hana Saku Iroha (In-Between Animation)
 * Macross Frontier (In-Between Animation)
 * Mobile Suit Gundam 00 (In-Between Animation)
 * Gundam 00: A Wakening of the Trailblazer (In-Between Animation)
 * Mobile Suit Gundam 0080 War in The Pocket (In-Between Animation)
 * Mobile Suit Gundam Chars Counterattack (In-Between Animation)
 * Naruto (In-Between Animation)
 * Neon Genesis Evangelion (In-Between & Secondary Animation)
 * Nodame Cantabile (In-Between Animation)
 * Noein (In-Between Animation)
 * Oniichan no Koto Nanka Zenzen Suki Ja Nai N Dakara Ne (2nd Key Animation)
 * Ouran High School Host Club (In-Between Animation)
 * Pandora Hearts (Production Cooperation)
 * Pokémon the First Movie (In-Between Animation)
 * Pokémon Giratina and The Sky Warrior (Animation Assistance)
 * Pokémon Zoroark Master of Illusions (In-Between Animation Assistance)
 * Professor Layton and The Eternal Diva (In-Between Animation)
 * Pumpkin Scissors (In-Between Animation)
 * Seto no Hanayome (In-Between Animation Cooperation)
 * Skip Beat (In-Between Animation)
 * The Sky Crawlers (In-Between Animation)
 * Spider Riders (In-Between Animation)
 * Spirited Away (Animation Support)
 * Squid Girl (In-Between Animation)
 * Sword of the Stranger (In-Between Animation)
 * Tekkon Kinkreet (In-Between Animation)
 * Tiger and Bunny (In-Between Animation)
 * Tengen Toppa Gurren Lagann (In-Between Animation)
 * Tokko (In-Between Animation)
 * Tokyo Magnitude 8 (Production Assistance)
 * Toradora (In-Between Assistance)
 * Turn a Gundam (In-Between Animation)
 * Ultra Maniac (In-Between Animation)

Tropes found in Studio DEEN's work:

 * Animation Bump: Occasionally, like all studios. But especially in their films.
 * Off Model: Weiss Kreuz is generally considered one of the studio's worst-animated shows.
 * Ginga Densetsu Weed's amount of Off Model is practically legendary among the fandom.
 * Painfully obvious in Axis Powers Hetalia. Observe.