The is a fictional family portrayed in the Japanese Super Sentai series Mahou Sentai Magiranger. They are a family of mages in various proficiencies that battle the evil Underground Hades Empire Infershia with their magical ability to transform into the Magirangers.
These five children (three brothers and two sisters) lived peacefully with their mother, on the notion that their father died in an expedition in Antarctica. But upon learning the truth, their mother revealed to them their family legacy. Over time, they learn their father was a Heavenly Saint. The five siblings also receive the power to attain "Legend" form. By the final half of the series, the siblings were reunited with their parents.
Advertisements for the series show that the first kata of the Ozu Siblings' names spell in Japanese.
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Official Site: Toei Company
Links: Wikipedia The Morphing Grid Super Sentai Time Capsule