A key issue noted for First appearance of Washbot. Firefly #25 was published by Boom! Studios on January 1, 2021, as part of a series that began in 2018. Greg Pak writes, and art comes from Arif Prianto, Bengal and Erica Henderson. This 36-page issue features Malcolm Reynolds, Zoe Washburne, River Tam, Kaylee Frye and Jayne Cobb, among 9 characters cataloged on VerseDB.