Marvel Comics Executive Editor Mike Marts has left the company to help launch a new publisher called AfterShock Comics, as reported Monday by Deadline. Marts is partnering with comics veteran Joe Pruett in the venture, and will serve as AfterShock's Editor-in-Chief.

Marts addressed the news in a series of tweets:

By now some of you may have heard that last week I gave notice at Marvel. I leave amicably and on great terms with my "M" Family...- Mike Marts (@mikemarts) April 13, 2015

But it's time for exciting new adventures as I join Aftershock as their Editor-in-Chief: http://t.co/p4gJA2yiB4- Mike Marts (@mikemarts) April 13, 2015

I could not be more excited about my future and the creative adventures that lie ahead of me. After years of honing my skills...- Mike Marts (@mikemarts) April 13, 2015

...at the two best publishers in the business, I am breaking to build a fun, safe, creative & competitive new home.- Mike Marts (@mikemarts) April 13, 2015

Marts rejoined Marvel in February 2014, after seven years at DC Comics, where he was the main editor of the Batman line. Previously, Marts worked as an editor at Marvel from 1996 to 2006. In his most recent tenure at Marvel, he supervised the X-Men titles and cosmic books including "Guardians of the Galaxy."

Pruett was the editor of acclaimed Caliber Comics anthology "Negative Burn," and has experience in launching an upstart publisher, starting Desperado Publishing in 2004. He wrote or co-wrote multiple X-Men comics during Marts' first stint at Marvel, such as the "Gambit & Bishop: Sons of the Atom" miniseries.

Nothing further is yet publicly known about AfterShock's publishing plans, but Deadline has the roster of its executive team: Co-CEO Michael Richter, who worked at eBay and Facebook and as head of development at Fog City Pictures; Co-CEO Jon Kramer, a reality TV and film veteran; President Lee Kramer, who was head story analyst at Endeavor and worked at Mandalay Pictures; and SVP Investor Relations Jawad Qureshi, a Silicon Valley investor.