Matthew Capiccioni (December 31, 1980) is an American professional wrestler, better known by his ring names M-Dogg 20, Matt Cross and Son of Havoc. In addition to performing on the independent circuit, Capiccioni has also worked for prominent promotions such as Ring of Honor, Chikara and the short-lived Wrestling Society X. His main character is that of an adherent of the "straight edge" lifestyle, a culture which he follows in real life. He was also a participant on WWE Tough Enough.