https://en.wikipedia.org/wiki/Identification_with_the_Aggressor
"Identification with the Aggressor (German: Identifizierung mit dem Angreifer)[1] is one of the forms of identification conceptualized by psychoanalysis. Specifically, it is a defence mechanism that indicates taking the role of the aggressor and his functional attributes, or imitating his aggressive and behavioral modality, when a psychological trauma brings about the hopeless dilemma of being either a victim or an abuser.[2]"
If you wanted to know why Aizen sounds so much like me.