The West-Khan of the country Ferox, Basilio was the reigning Khan for several years behind his prized champion Lon'qu. However, Lon'qu was bested by Marth and became his new champion for the Ferox tournament. Marth was soundly beaten by Chrom and Basilio lost his ruling status to Flavia. Out of admiration for Chrom's skill, he lends Lon'qu to their cause. Basilio assists Chrom during the Ylisse-Plegia war, fighting alongside his warriors. Though Chrom's army makes it to Plegia Castle, their rescue fails and results in the death of Emmeryn. Basilio prevents Chrom from recklessly trying to kill Gangrel and forces him to retreat for now. Back at Ferox, Chrom's army raises their leader's spirit. Basilio recognizes Chrom's resolve and vows to help him defeat Gangrel once and for all.