My time is now by John Cena
I'm pretty sure that John Cena and his brother sings it.
John Cena actually sings his own theme song and is the first to do so
John Boutte
john sings it himself
John McLaughlin
Dr. John
sounds a lot like Dr. John
Rev Theory sings the theme song.
John Cena does.
Tha Trademarc John Cena's cousin
Steve Hampton and John Adair