I loved when Jose Aldo was on his winning streak in WEC/Early UFC and everybody was afraid to fight him. Or Fedors reign. Guy going in cold as ice every time, never said anything, just got in there with who-ever-the-fuck and KOd him clean and walked out. The few(!) interviews he did during that time was always in russian which I don't speak so there was always a great mystique about him that I've never seen like that in a fighter before. The term "era" is used loosely.