#1 Bobby Lashley

Bobby Lashley joined WWE in 2004 and won the United States Championship soon after making his debut. He was Mr. McMahon's chosen one and was made the face of ECW. His Battle of the Billionaire’s angle at WrestleMania 23 against Umaga was supposed to be the turning point of his career but he could never rise to the expectations.
After being released in 2008, Lashley went on to become achieve colossal success in TNA(now Impact Wrestling). He even has a 15-2 record in MMA and is a drastically improved in-ring performer.
Lashley was released from Impact Wrestling in January 2018. There are rumors doing rounds that Lashley may have signed a contract with WWE. If it actually happens, we can't wait to see him in action against the likes of Roman Reigns, Brock Lesnar, and Braun Strowman. A powerhouse like him will be an immense crowd attraction.