Last year (or earlier this year?) Atomic Robo went the web comic route. Creators Brian Clevenger (writer) and Scott Wegna (artist) took Atomic Robo out of Red 5 Comics. They setup a web page backed with Patreon and using KickStarter to offer hardcover editions of previous collections. And, plans to offer future print collections on-demand.
Out of the blue, Clevenger & Wegna were contacted by IDW Publishing to keep Atomic Robo in print. IDW have been putting out the latest story arc (in parallel with the web comic,) and they have put out an omnibus of the first three volumes, Atomic Robo: The Everything Explodes Collection.
The second omnibus is already listed at Amazon, too, Atomic Robo: The Crystals Are Integral Collection.
Clevenger guested on a Comics Alternative podcast. It's long, but very insightful. I loved his observation that in a way, Atomic Robo is the Bugs Bunny of his universe. But Dr. Dinosaur is Cecil the Turtle - the only character who ever disrupted Bugs Bunny's winning streak.
Again, I can't recommend this comic enough. It's written for adults, but it is all ages appropriate and tons of fun for everyone.
The Real Science Adventures continue!