Micronauts #4 was published by IDW Publishing on July 1, 2016, as part of a series that began in 2016. Cullen Bunn writes, and art comes from Adam Riches, David Baldeón and David Garcia Cruz. This 32-page issue features Acroyear, Baron Karza, Biotron, Microtron and Argon, among 8 characters cataloged on VerseDB.