The Undertaker lost the World Heavyweight Champion to Chris Jericho at W. W. E. Elimination Chamber 2010 after Shawn Michaels interfered.
no
The Undertaker was a 4-time WWE Champion, 7-time World Heavyweight Champion, 6-time undisputed champion and 4-time cruiser weight champion
Chris Jericho has won the World Heavyweight Champion 3 times. His latest World Heavyweight Champion win was inside a Elimination Chamber and he won that from The Undertaker after a interference from Shawn Michaels.
The former World Heavyweight Champion is Big Show
if you mean is he world heavy weight champion the yes. but if you say in he the heaviest world heavyweight champion then no because yokozuna was
jinder mahal
yes
chris jericho.
Canelo Alvarez
rocky balboa
Edge is the current heavy weight champion. He defeated John Cena at Backlash 2009 with the help of the Big Show
the undertaker