 Grimmjow has a defiant, punk attitude towards authority, and can be cowed only by Sōsuke Aizen.Despite his personality, Grimmjow has a sense of honor, repays those he feels he owes a debt to, and is not willing to battle handicapped opponents.Motivated by his dream to become a hollow king, Grimmjow was originally a panther-like Adjucha Hollow who led a close-knit gang of five other Adjuchas who all became his "fracciónes" after their transition into arrancars.