5. The Undertaker
The Phenom, The Undertaker is a legend in the professional wrestling business. After debuting with Paul Bearer, the Undertaker slowly but steadily built a WrestleMania streak, which is now 20-0. Undertaker has been undefeated at WrestleMania, and is invincible. These days, Undertaker is barely featured on RAW and Smackdown, but he only returns for the one-off WrestleMania match each year, and wins, shedding off all the ring rust and winning the big match. Yet, imagine Undertaker as the WWE Champion. He hasn't been a world champion in a long time, and if he becomes a champion in the WWE, the prestige of the title will increase manifold. Yes, the Undertaker does not need the championship, but did John Cena need it for the twelfth time? No, he didn't, and yes, the Undertaker will be a better champion than John Cena. Imagine the feuds which will accompany if 'Taker wins the championship and the credibility of the belt will increase. 'Taker becoming champion will be excellent to watch and witness.