Fun fact: Matthew Lillard has appeared in all but one Scream movie
Scream 7 will be his sixth appearance in the franchise. He has appeared in every instalment with the exception of Scream 4.
Scream (1996): Portrays Stu Macher
Scream 2: Cameo at the college party
Scream 3: Archival audio during Sidney's set visit
Scream (2022): Voice cameo at the final act party
Scream VI: Photograph
Scream 7: The return of Stu Macher
He is now set to have the most franchise appearances out of any of the twelve main killers (6), followed by Skeet Ulrich and Scott Foley (4 each).
Timothy Olyphant, Laurie Metcalf, Rory Culkin, Emma Roberts, Mikey Madison, and Jack Quaid each have two appearances, with all of them appearing in just their debut films, and via photographs in Scream VI (with the exception of Jack Quaid who also appeared in archive footage too).
Dermot Mulroney, Jack Champion, and Liana Liberato all appear in just Scream VI.