#2 Friend: The Undertaker

Considering The Undertaker is arguably the most loyal WWE wrestler of all time, it's certainly not hard to understand why "The Phenom" is one of Vince McMahon's best friends. The Undertaker has unquestionably earned the respect he garners backstage from all the talent and officials (including Mr. McMahon), as he has spent three decades performing at a very high level, all while being a model employee for the company.
The Undertaker always remained loyal to the WWE even during the toughest periods of The Monday Night Wars against WCW in the late 90s, and Vince is gracious for 'Taker's undying loyalty. Not only is The Undertaker good friends with Vince McMahon, but "The Deadman's" also very close with his kids Shane, Stephanie and son-in-law Triple H. Like many fans, Vince is undoubtedly a firm believer in the notion that WrestleMania simply wouldn't be the same without 'Taker's presence.
Cody Rhodes' uncle is a WWE Hall of Famer. More details HERE.