Professional wrestling career was started in 1999 with Ultimate Pro Wrestling (UPW), and won the UPW Heavyweight Championship the following year
WWE - Cena signed a developmental contract with the World Wrestling Federation (WWF, later renamed to WWE) in 2001, debuting on the WWE main roster in 2002
Rapper - From a generic character in 2002, Cena morphed into an arrogant and edgy rapper for the time period of 2002–2004, which earned him a huge stardom within the audience on SmackDown!
Superman - Cena later transitioned to his current character, which he describes as a "goody-two shoes Superman"
Polarizing professional - However, Cena has been labeled as the "most polarizing professional wrestler ever" as his character has many supporters and many detractors