A key issue noted for First appearance of Bridgette McGuire and First appearance of Duncan McGuire. Once & Future #1 was published by Boom! Studios on August 1, 2019, as part of a series that began in 2019. Kieron Gillen writes, and art comes from Dan Mora, David LaFuente and German Garcia. This 36-page issue features Duncan McGuire, Bridgette McGuire, Rose and Elaine McGuire.