Kevin Clash, the former voice of Sesame Street's Elmo, used alcohol as a precursor to oral sex with an underage boy, according to his anonymous third accuser.
According to the lawsuit, filed in federal court in Manhattan, the alleged victim met Clash on a gay phone chat line when he was 16 and Clash was around 40.
The accuser, now 28, says he was in NYC pursuing modeling opportunities.
Clash invited him to his swanky NYC apartment, which was strewn with Elmo dolls and photos of Elmo with famous people, including Beyonce and Tyra Banks.
During the encounter, the accuser - John Doe, to remain anonymous - claims Clash plied him with alcohol and "groomed him," and then engaged in sexual contact.
In the form of "oral sex and digital penetration of John's anus."
The accuser says Kevin Clash stayed in touch with him after the sexual encounter, although no further sexual contact occurred until he became an adult.
The accuser is suing for unspecified damages.
Amid similar allegations from two other men who claim he had sex with them in their pre-18 years, Clash resigned from Sesame Street this month.
Clash, an openly gay man, has denied an improper relationships took place between himself and the first accuser, saying he was legal at the time.
He has yet to respond directly to any of the three.