#1 Roman Reigns has never defended a title at WrestleMania

Roman Reigns is no stranger to the Grandest Stage of Them All. He's main-evented four straight WrestleManias from 2015 to 2018. However, he's never walked into the Showcase of Immortals as a Champion defending his title.
Roman Reigns first challenged for a World title at WrestleMania 31 against Brock Lesnar after winning the 2015 Men's Royal Rumble Match. He then went on to claim the WWE World Heavyweight Championship against Triple H at WrestleMania 32. He defeated The Undertaker at WrestleMania 33 and then lost to Lesnar the next year while challenging for the Universal Championship. His last match at the Show of Shows came in 2019, where he defeated Drew McIntyre.
Cody has no chance against John Cena? Details HERE
This is a milestone though, which The Big Dog is expected to cross off his list sooner or later. He's likely to be in the title picture upon his return to WWE programming. And he could go on to become either the Universal Champion or the Intercontinental Champion before headlining yet another WrestleMania, this time as Champion.