Zora Ideale is part of the Black Bulls Magic Knight squad and the Royal Knight squad.
His father was a magic knight, the first commoner in fact, and he was killed by his fellow squad members, who laughed at his passing. Zora overheard this and was enraged, vowing to avenge his father by taking out corrupt magic knights. Zora later infiltrates the royal knight selection process, planning to exact his revenge on as many knights as possible. However, his ideologies begin to change when he meets Asta, a commoner magic knight with no magic that never gives up. Zora finds a place that he belongs and joins the Black Bulls and helps protect the Clover Kingdom from evil.
(Source: Black Clover Wiki)