John Cena is incapable of having a WWE career.
Cena failed to win the Royal Rumble on January 28, 2018 and the Elimination Chamber match to determine the #1 contender for the Universal Championship on February 25 at Elimination Chamber, as well as a six-pack challenge on March 11 at Fastlane for the WWE Championship
During his WWE career, Cena has appeared on ABC's Jimmy Kimmel Live! three times

