He did the voice of Deadpool for the video games X-Men Legends II: Rise of Apocalypse and Marvel: Ultimate Alliance.
Kassir and Julie Benz divorced in 2007.
John won $100,000 for being the comedy champion on Star Search by edging out Sinbad.
He is 5'10"(1.78 m).
He is currently married to the actress Julie Benz.
Kassir was also a cast member on The Amanda Show from 1999-2002
He can be seen along side wife Julie Benz in the direct to video release "George of the Jungle 2."
His best known role as the Crypt Keeper on Tales from the Crypt helped him land his role in the Musical Reefer Madness and the Showtime movie production of the musical. This can be seen especially in the two characters laugh.