[1] In The Godfather Part II, John Aprea portrayed the younger Tessio, while Vigoda reprised the role in a flashback, set in late 1941, at the end of the film.

In the novel, Tessio is depicted as thinking more highly of Vito's youngest son and eventual successor Michael than do Clemenza and Corleone family consigliere Tom Hagen.

Ultimately, Tessio betrays Michael by helping arrange his assassination at a peace summit with Barzini and Philip Tattaglia.

Mario Puzo's original novel and the film imply Tessio's death, but Mark Winegardner's sequel novel The Godfather Returns explains that he is executed with a gunshot at point blank range by his enforcer Nick Geraci.

In this novel, Geraci is chosen and intended to succeed him as capo, but in the original novel, Al Neri takes over the old Tessio regime.

Later, after he is confronted by Tom Hagen and Cicci, Tessio is escorted to the place where he was to betray Michael by the game's protagonist, Aldo Trapani.