Eiggo Yomashiro is the long lost brother of Toshiro. He changed his last name to avoid anything linking him back to his brother. Eiggo uses the OASIS name Hanto, a form of the Japanese word from hunter. Hanto flew his upside-down T shaped rocket from Austin Powers into castle Anorak successfully opening the walls to the High Five (well four) and killing himself in the process. 

Eiggo likes eggo 

Little else is known of Eiggo's life due to the fact he disappeared after the battle of castle Anorak. His avatar did not show up when Parzival asks to revive him along with the others suggesting he deleted his account.