Golgorosso Balto

Golgosso Valto (ゴルゴロッソ・バルトー) is Eugeo's senpai during his first year in the Norlangarth Empire's Independent Master Sword Academy.

Background
He does not descend from a noble family, so he had to work hard to enter the academy.

He selected Eugeo because he wasn't from a noble family either and Solterina had already selected Kirito.

Chronology
During the events of Alicization Running, he's a 3rd ranked elite swordman in the Master Sword Academy, in each placing tournament losing against Solterina Celulute.

He just watches Kirito's match against Uolo Levanteinn and was later invited to Solterina's room to celebrate.

Golgosso is Eugeo's mentor and is known for making Eugeo take of his clothes so he can look at Eugeo's muscle development.

Skills
He uses the Valto style, which gains it's power from the body muscles, and he empowers his sword with the hours of dedication and training he has done to reach where he's now.