He stands only 5-foot-6 and barely weighs 175 pounds, but a lack of size didn’t stop the incomparable Rey Mysterio from achieving giant dreams like capturing the WWE Championship or outlasting 30 Superstars to win the Royal Rumble as the No. 2 entrant. Whether he was standing up to a dangerous giant like Kane or flying down from the top of a steel cage, The Ultimate Underdog is known for refusing to be intimidated inside the ring.

Trained in the proud Mexican tradition of lucha libre before he was even old enough to drive, Rey Mysterio adopted his ring name in tribute to his uncle and hid his face under a mask as lucha custom dictates. In a world of hooded high-flyers, the exhilarating Mysterio stood out enough to earn the attention of ECW and WCW where his thrilling bouts with such rivals as Eddie Guerrero and Psicosis became the stuff of legend among sports-entertainment fans. His greatest successes, however, were realized after joining WWE in 2002.

First establishing himself in the cruiserweight and tag team divisions, the Mexican Superstar soon proved that size doesn’t matter when he beat the odds to win the Royal Rumble Match in 2006. From there, Mysterio accomplished the inconceivable when he won the World Heavyweight Championship at WrestleMania 22, becoming the smallest Superstar ever to hold that title.

Mysterio’s accomplishments did not end there. At Fatal 4-Way 2010, the high-flyer captured his second World Heavyweight Championship against Big Show, CM Punk and Jack Swagger. In July 2011 on Raw, Mysterio scored his first WWE Championship with an emotional win over The Miz. The reign was short-lived, however, as he lost the coveted title that same night when he went one-on-one with fellow fan favorite John Cena.

After taking a sabbatical from WWE, Mysterio made his jaw-dropping return as a surprise entrant in the 2018 Royal Rumble! Mysterio hasn't missed a beat since landing on the blue brand, as his edge-of-your-seat matches against Andrade are already the stuff of legend. Now on Raw after the 2019 Superstar Shake-up, Mysterio has quickly gotten into a heated rivalry with Samoa Joe.

With his revolutionary style, Mysterio overcame the odds to enjoy a championship career that is respected by fellow Superstars and the WWE Universe alike, making him one of the most well-known and beloved competitors of all time.