Bhunivelze is a perfectionist with no compunction over disposing of those he uses and little tolerance to humans, whom he considers unclean because of the Chaos within them. As inferred in the Fabula Nova Crystallis: Final Fantasy mythology, he fears death and hates his mother and those resembling her. Bhunivelze has different motivations in the Japanese and English releases of Lighting Returns. In the Japanese release, Bhunivelze uses Hope Estheim as his vessel to better understand humans.