Yuuki Ozaki (尾崎雄貴) is a Japanese musician raised in Wakkanai, Hokkaido. Yuuki is mainly known for being the main vocalist, guitarist, and songwriter for Galileo Galilei, and its reunion band, Bird Bear Hare and Fish.

In 2007, Yuuki would form the band Galileo Galilei with his younger brother, Kazuki Ozaki (尾崎和樹), while still being in high school. Galileo Galilei would proceed to create music revolving around their style of indie/alternative rock until April 2016, the month of their announced breakup.

Despite the band parting ways, Yuuki would still continue to create solo music with his new alias, warbear, in which he focused on more dream-pop while also maintaining the same indie sound from Galileo Galilei. He would release his first solo studio album, warbear, on December 2017, which has the same name as his alias.

During a solo concert on January 27th 2018, Yuuki announced that the former Galileo Galilei members would reunite but with the new name of “Bird Bear Hare and Fish”, and that they would hold their first live concert on May 10th in Tokyo with their new name. Yuuki and the other BBHF members are now currently creating music that is more pop-oriented as well as touring.