#4 Mr. Kennedy

MRRRRRR...... KENNEDDDDY!
Sorry, just had to do it.
It has been a long time since we have seen Mr Kennedy in the WWE, almost an entire decade, in fact. Everyone should know his story by now, he was almost the future of the company, but due to some back to back injuries, suspensions and Triple H not being a big fan of him, his future came crashing down.
However, while he still a superstar on the rise, he gave us some great SmackDown moments and matches. He had a very thrilling feud with The Undertaker in 2006, and his self-introduction gimmick provided much entertainment.
With impressive victories on SmackDown over Batista, Chris Benoit, Rey Mysterio, Kane and The Undertaker, among more, a cameo appearance from the former WWE United States Champion on SmackDown 1000 would be a lot of fun and something that many fans would be happy to see.