Kevin Garnett

KG once told Carmelo Anthony's wife "your husband tastes like Honey Nut Cheerios." He told Tim Duncan "happy Mother's Day" after Duncan's mother had passed. He allegedly drove a teammate to tears during practice by telling him repeatedly that he looked like a cancer patient. Garnett is a legitimate NBA champion and MVP — this isn't disputed. But his trash talk was so personal, so unhinged, and so unnecessarily cruel that it defines his legacy as much as any rebound. The man had no off switch.