 Prior to his introduction, Szayelaporro sends Rudobone to bring him any defeated arrancars in order to analyze the abilities of those who defeated them.Szayelaporro later engages Renji Abarai, introducing himself as Ilfort's brother while revealing to have used the insects he laced on his brother counter Renji's abilities before unleashing his "Fracción" Medazeppi on him before Uryū Ishida intervenes.Szayelaporro eventually nullifies Uryū's abilities from studying Cirucci's corpse, playing with his opponents before deciding to personally kill them after his domain is destroyed in the fight despite Pesche and Dondochakka's attempted surprise attack.