John Cena does not have a tag team partner because he is a singles wrestler. Cena has never been a tag team wrestler in his career. though he has won the WWE Tag Titles multiple times with partners like Shawn Micheals, Miz etc, he has never been a tag team guy. He has been a singles wrestler and has had a lot of success individually.
sin cara or Rey Mysterio
The Undertaker's tag-team partner is Kane
the Great Khali doesn't have a tag team partner because he doesn't compete in tag team matches.
He's won the world tag team championships twice,both with then-enemies Shawn Michael's and Batista.John Cena doesn't have a tag team partner at the moment.
Joey Mercury. John Morrison's former tag team partner from MNM
the great khalis tag team partner is r-truth.
EDGE
vikki
Jeff Hardy's partners are r truth rey mysterio and john Morrison
i think maria
jim neidhart