Rory

Lorelai Gilmore, also known as "Rory", is Reuben's pet cat. She is featured in Undertale #1 (TRAILER PARK DREAMS) where the protagonist shares her namesake.

Trivia

 * Rory is named after the character Lorelai "Rory" Gilmore from the show Gilmore Girls, which is Reuben's favorite show.