The Mexican luchador, real name Cesar Gonzalez Barron, was going head to head with former WWE star Juventud Guerrera (a.k.a. 'The Juice') at the Roundhouse Theatre in Camden on Saturday, May 11, when he collapsed in the ring.
Officials rushed to try and resuscitate him as the audience was ushered out the doors, but the 51-year-old was subsequently pronounced dead from a suspected heart attack.
The sad news has since led actor Jack to remember his late pal in a post on Instagram.
Sharing a behind-the-scenes snap of Gonzalez Barron posing for a photo in full costume as the 2006 movie villain Ramses, he wrote, "Cesar Gonzalez ... go with God, brother."