"Baka, baka, baka!"

Akita Neru

Akita Neru (亞北ネル) is an officially recognized derivative. The term "Derivative" is used here to describe a fanmade VOCALOID character that is based on an already existing character.

Hatsune Miku

Hatsune Miku (初音ミク), codenamed CV01, was the first Japanese VOCALOID to be both developed and distributed by Crypton Future Media, Inc.. She was initially released in August 2007 for the VOCALOID2 engine and was the first member of the Character Vocal Series. She was the seventh VOCALOID overall, as well as the second VOCALOID2 vocal released to be released for the engine. Her voice is provided by the Japanese voice actress Saki Fujita (藤田咲, Fujita Saki).

Kasane Teto

Kasane Teto (重音テト) is a Japanese (and later English) UTAU who was originally created as a troll "VOCALOID" by fans. Her surname 重音 (Kasane) literally means "heavy sound" or "overlapped sound;" while these interpretations are widely accepted among fans, TWINDRILL has not released any announcements about the meaning of the name. Her name テト (Teto) comes from Tetopettenson, a parody song of Le Beau Tambour.