Taken from: https://xenosaga.fandom.com/wiki/Ricardo_Banderas

Rico has shown to have a rather fickle nature. At first he shows little interest in joining Fei's party. Upon losing the title of battling champ, he resumes his assassination attempts on the Kaiser, until his subsequent recapture. After this, he is dealt with harshly, in the form of being pitted against a Rankar without his Gear. Fei comes to his rescue and attempts to convince him that there must be things for him to live for. Rico gives no reception for Fei's compassion for a second time (the first time being when he got injured fighting a monster in the Kislev sewers to help clear his name).