Wayne Grayson is the primary stage name of American voice actor Vincent Penna Jr., who has built an extensive career spanning several decades in the industry. Born on May 8, 1972, he has also been credited under other names, including Arturo Sandoval and Vinnie Penna. His work is closely associated with the dubbing of Japanese anime for English-speaking audiences, with a significant portion of his credits stemming from productions at prominent studios such as 4Kids Entertainment, NYAV Post, Central Park Media, Media Blasters, and DuArt Film and Video.

Grayson is perhaps most widely recognized for two iconic roles from the 2000s. He provided the voice of Joey Wheeler, the loyal and hot-headed best friend of the protagonist, in the immensely popular English-language adaptation of Yu-Gi-Oh! Duel Monsters. This role became a defining part of his career, leading him to reprise the character in numerous subsequent Yu-Gi-Oh! video games, crossovers like Yu-Gi-Oh! GX, and the feature film Yu-Gi-Oh!: The Dark Side of Dimensions. His other landmark role from this era is Michelangelo in the 2003 Teenage Mutant Ninja Turtles television series, where he brought the fun-loving, pizza-obsessed turtle to life. He also voiced the character in related video games such as Teenage Mutant Ninja Turtles: Turtles in Time Re-Shelled.

Beyond these signature performances, Grayson's filmography demonstrates a wide range, encompassing the many roles specified by the user. These credits include portraying Angelo Parker in Arte, Masaharu Nio in The Prince of Tennis II Hyotei vs Rikkai Game of Future, Noboru Taki in the critically acclaimed film Liz and the Blue Bird, and Ben in Pokémon Ranger: Guardian Signs. He also voiced Kosuke Entohji in GaoGaiGar: King of the Braves, Masashi Satou in To Heart, Tsubaki Sadamitsu in Sadamitsu the Destroyer, and Kash Gyustan/Hellstinger in Voltage Fighter Gowcaizer. His work in the fantasy genre includes roles such as Kyo Aguri in Knight Hunters Eternity, a Guard in The Weathering Continent, and Kijita/Tokiji in Napping Princess. In historical and romantic dramas, he played Richard Jones in both Emma: A Victorian Romance and its second act. His versatility also extends to action series like Ikki Tousen: Dragon Destiny, where he voiced both Genpou Saji and Houkou Kakuka. He was also part of the English dub cast for the Yu-Gi-Oh! Sevens series, taking on the role of Seatbastian.

Grayson's career is marked by recurring collaborations with a consistent group of voice actors and directors, a common characteristic of the dubbing industry. He has frequently worked alongside colleagues such as Dan Green, Veronica Taylor, Eric Stuart, and Marc Thompson, particularly during his years with 4Kids Entertainment on shows like Yu-Gi-Oh!, Pokémon, and Shaman King. In addition to his voice work, Grayson has also worked as a director, further solidifying his place within the voice acting community. His body of work, which remains active into the 2020s with roles in series like 44 Cats and new film projects, reflects a sustained and significant contribution to English-language adaptations of anime and animated series.