Humbert Zizek

Humbert Zizek (ウンベール・ジーゼック) is a swordman-in-training in the Norlangarth Empire's Independent Master Sword Academy. He's a 4th Class Noble and Raios Antinous only friend.

Alicization Running
He appears in the caffeteria sitting besides Raios Antionous, when Kirito and Eugeo sit near them, they rise their voice, emiting comentaries to enrage them.

He accompanies Raios to destroy the flowers that Kirito was cultivating, and mocks in his face when he appears just to see what they've done.

Alicization Turning
After watching Kirito handing out to Solterina Celulute one of the flowers they destroyed, he decides not to mess anymore with him, but instead directs all his insults and mockery to Eugeo.

When Eugeo decides to practice he's already in the arena, practicing with Raios, after teasing Eugeo, he accepts to duel with him, to his surprise, Eugeo makes him stumble, and while he was recovering, Raios, stops the duel and declares a draw. Although he didn't agree, he followed Raios orders and left the arena.