Basilisx is cold, ruthless, and bloodthirsty. He is more than willing to use underhanded tactics to achieve victory. Despite this, he has shown a small degree of honor, as he refused to use his infamous petrification stare against the plumber despite freely admitting he could easily have done so and then used his claws to shred apart his petrified body, although it should be noted he mostly chose this route so he could fully satiate his desire for vengeance against the plumber, Mario.