#13 WWE to WCW - Alundra Blayze
In a move that she probably still regrets to this day, no matter how iconic it was at the time, Alundra Blayze was one of the first and most important cases of a WWE Superstar walking out on Vince McMahon. Her betrayal of the company was a genuine shock at the time which left WWE and its fans reeling in equal measure.
After riding high as the WWE Women’s Champion for some time, Alundra Blayze, a.k.a Madusa Miceli was informed that the women's division was being phased out because of budget cuts.
Naturally ticked off by the decision, Madusa accepted a better offer from rivals, WCW, and showed up on WCW Nitro to dump the WWE Women's Championship belt into a garbage bin and badmouthed WWE during a live broadcast. This was a move that did not please Vince McMahon at the time, as he basically blacklisted Madusa for many years and her failings in WCW just highlighted how poor of a decision she had made.