Roku #4 was published by DMG/Valiant Entertainment on January 1, 2020, as part of a series that began in 2019. Cullen Bunn writes, and art comes from Dan Brereton, Elsa Charretier and Patrice Ordas. This 36-page issue features Roku, Minister of Blades, Elena Vasliev, Ember-1 and Marybeth.