Jaune Arc

Jaune Arc is a student at Beacon Academy, as well as the leader of Team JNPR. Wielding the Crocea Mors, a sword, and sheath (which is able to expand into a shield) passed down through his family for generations. Though his current skill level may make him the underdog in any and all battles, the potential stored within is unimaginable.

(Source: RWBY Wiki)