He joins Vince Vaughn, James Marsden, Eiza Gonzalez, Jimmy Tatro and Arturo Castro.
Character names and descriptions nor the films plot has been revealed.
Deadline first reported in May that 20th Century landed the project following a heated bidding war.
Lewis TanKat Holt
Andrew Lazar is producing.
He originally brought the character to life inDeadpool 2,released in 2018.
He is repped by Gersh, Luber Roklin and Goodman, Genow, Schenkman.
