#7 Kane
So, it's not been too long since we last saw the Devil's Favourite Demon, and there's every chance we may never see Kane again after Glenn Jacobs became Mayor of Knox County - but if ever there was one last chance to see The Big Red Machine, SmackDown's 1000th episode could very well be the place.
Kane's reputation as one of WWE's most dominant Superstars is no secret, but what's less obvious is the impact The Big Red Machine had on the blue brand. Fighting on the first ever episode of SmackDown, defending the World Tag Team Championships with X-Pac against The New Age Outlaws, the legendary Superstar is possibly the star with the record for the longest tenure on the blue brand, only making his last appearance last month.
One thing is for sure, though, as always, Kane would be greeted with a warm welcome if he ascended from the depths of Hell to appear at this milestone show.