KATSEYE has confirmed their first appearance on 'The Tonight Show Starring Jimmy Fallon' on February 4, 2026. The announcement was made on January 31 through the program's official Twitter account. A teaser video previously showed host Jimmy Fallon eating a zucchini, referencing the lyrics of the group's latest single 'Internet Girl.' KATSEYE is set to make their U.S. talk show debut on the February 4 episode.