Mike Dimayuga, the artist of the webcomic Colt Noble and the Megalords and the Arcana graphic novel Hero House, has passed away, according to reports from multiple industry professionals.

Dimayuga worked with Tim Seeley on Colt Noble and Hack/Slash #23, and illustrated a story in Action DoubleFeature #3, published digitally by Four Star Studios, co-run by Seeley. On Facebook, Seeley paid tribute to Dimayuga, whose work he first encountered through DeviantArt.

"I met up with Mike at San Diego Comic-Con for the release of Colt Noble at the Image Comics booth, and was really surprised to find he was suffering from MS," Seeley wrote. "It had clearly not slowed him down at all artistically, and hadn't put any kind of damper on his attitude. Via the Con Mike became friendly with all my collaborators, Steve Seeley, Mike Moreci, Mike Norton ... everyone liked the dude immediately."

James Asmus, who penned the Action DoubleFeature story illustrated by Dimayuga, wrote on Twitter, "Comics lost one of the kindest, most dedicated pros I've ever known. Mike Dimayuga's passing is a genuine loss."

In 2009, Hero House writer Justin Aclin described Dimayuga's contributions to the project, saying, "Mike's enthusiasm and tireless dedication to the book have truly kept it going in its darkest days. It's no exaggeration to say Hero House wouldn't exist without Mike, and there's no way it would look half as good as it does without him."