Majin Vegeta in DBZ.
'I was the perfect warrior, cold and ruthless. I lived by my strength alone, uninhibited by foolish emotion.... but slowly over the years I became one of you. My quest for greatness gradually giving way to this life of mediocrity. I awoke one day to find I had settled down, formed a family - I had even grown quite fond of them. Would u believe I almost started to think the Earth was a nice place to live. Do you understand now Kakarott? That's why I needed Babidi to set me free. By releasing the evil in my heart he has freed me of the petty attachments... and I have to say it feels pretty good.'