Byleth
The main character of Fire Emblem: Three Houses. He is a former mercenary who took a teaching job at the Garreg Mach Monestary. He has the Crest of Flames, a mysterious yet powerful Crest that allows him to wield the Sword of the Creator. Fans of the Super Smash Bros. games really dislike him.
Aided by Sothis and with the Sword of the Creator in his hand, Byleth rushes into battle.