Tetris: The Series

Tetris: The Series is an anime television series based on Tetris.

Premise
It follows the Starship Tetra piloted by Tee, the ship's captain; and the crew O, Ai, Ess, the twins Jay and Elle, and Zed.

Main characters

 * Tee/ティ (voiced by Kaoru Mizuhara in the Japanese version and by Max Mittelman in the English dub) - He is the main protagonist of the series. He is a young man who serves as the captain of the Starship Tetra. He's mindful of his manners, but as a side effect he tends to be stoic towards others. His partner is O. He is based off the T Tetris piece.
 * O/オー (voiced by Mina Tominaga in the Japanese version and by Cindy Robinson in the English dub) - He is a crew member of the Tetship, being Tee's partner with the duty of reporting on the Starship Tetra's status. All he can say is "pi", and can be seen as a Tetris equivalent to Carbuncle in Puyo Puyo series. He is based off of the square or O Tetris piece.
 * Ai/アイ (voiced by Yuuki Tai in the Japanese version and by Joe J. Thomas in the English dub) - He is the chief engineer on the Starship Tetra. Normally a knowledgeable gentleman, he breaks into tears and a dog-like whimper when panicking. Like the other Tetris-based characters, he is named after a Tetrimino. The namesake Tetrimino motif is visible on his boots.
 * Ess/エス (voiced by Yui Horie in the Japanese version and by Eden Riegel in the English dub) - She is a crew member on the Starship Tetra. She is the daughter of Ex, who left Ess when she was younger. She is based off the S Tetris piece.
 * Jay & Elle/ジェイ&エル (voiced by Kathleen Miyuki in the Japanese version and by Wendee Lee in the English dub) - They are crew members on the Starship Tetra. The two share a common interest in pulling off pranks and generally causing mischief. They also tend to complete the other's sentence, or at least rephrase it in a different order. They are based off the J and L Tetris pieces.
 * Zed/ゼット (voiced by Ryuunosuke Watanuki in the Japanese version and by Joe J. Thomas in the English dub) - It is a large housekeeping robot and a crew member on Spaceship Tetra. Ex created Zed to take care of his daughter Ess while he is away from her, but Ess now sees Zed as her actual father, calling it "Papa". He is based off the Z Tetris piece. (Zed is UK for 'Z'.)