Claudio Castagnoli (born 27 December 1980) is a Swiss professional wrestler. He is currently signed to WWE, where he performs on the Raw brand under the ring name Cesaro. He was previously known for his work in Ring of Honor (ROH) and various independent promotions including Pro Wrestling Guerrilla (PWG), Combat Zone Wrestling (CZW), and Pro Wrestling Noah under his real name. Castagnoli is an accomplished tag team wrestler, being a two-time ROH World Tag Team Champion with his partner Chris Hero as The Kings of Wrestling (where their 364-day reign as champions is the longest in company history). Within WWE, he is a six-time tag team champion, including one reign as SmackDown Tag Team Champion with Sheamus whilst teaming with him and holding the WWE (Raw) Tag Team Championship a record five times, sharing one reign with Tyson Kidd as part of their team and four reigns with Sheamus. He has also won various independent tag team titles both with Hero and with Ares as Swiss Money Holding, such as the Chikara Campeonatos de Parejas, the JCW Tag Team Championship and the CZW World Tag Team Championship. Castagnoli and Hero were voted as the 2010 Tag Team of the Year by Wrestling Observer Newsletter readers. He has also had success as a singles wrestler, having won the WWE's United States Championship and the inaugural André the Giant Memorial Trophy at WrestleMania XXX, along with numerous independent singles titles, such as the PWG World Championship. When playing a villainous character, particularly in the United States, Castagnoli has been known to emphasize his European origin as part of his gimmick, proclaiming a superior intellect and fashion sensibility, and by regularly using the European uppercut. Castagnoli is also known for his feats of strength in the ring and is frequently mentioned as one of WWE's best and most underrated performers. He was consequently recognized by the Wrestling Observer Newsletter as the Most Underrated Wrestler in the world a record four times, from 2013 to 2016.