#1 Eddie Guerrero

Eddie is perhaps the most beloved WWE Champion of all time. He won the WWE title from none other than the legendary Brock Lesnar at the PPV No Way Out. He held the title for 133 days. His famous tactics to 'lie, cheat and steal' is something the WWE used as a gimmick and garnered him a lot of crowd support.
Eddie Guerrero has feuded and fought several superstars in the WWE during his tenure as the WWE Champion. His classic rivalry was against JBL whom he defeated multiple times and defended his title. Either by pin-fall or via disqualification Eddie used any means to cling on to his WWE Championship.
Cody Rhodes' uncle is a WWE Hall of Famer. More details HERE.
Eddie finally Lost the title to JBL at the PPV 'The Great American Bash'. He could not win the title twice and this really disheartened his fans globally. His sudden demise was a huge shock to the wrestling fraternity and everyone was in disbelief. No wrestler could ever enjoy the love he got as the WWE Champion. Sadly, we won't be able to see this superstar ever with the WWE Championship.