Update April 26, 2015 at 2:18 p.m.: Since the original announcement, Marvel has released the cover to Drax #1 by Ed McGuinness which could give some further insight to the series.
If you note the "Intergalactic Fight Club" text in the Drax #1 covers, it's fair to wager that the series will borrow somewhat from CM Punk's life as a in-ring competitor in professional wrestling and now MMA. This isn't the first time fighting promotions have been used in Marvel Comics; wrestling is a major part of Spider-Man's origins, and wrestling leagues were featured prominently in The Thing and Thunderbolts for a time. An intergalactic fight league was even featured in the opening pages of sister title, Rocket Racoon #1.
And speaking of comics-to-wrestling connections, it looks like Drax #1 cover artist Ed McGuinness has included a cameo by wrestler Colt Cabana in the background on the bottom left. Cabana entered wrestling at the same time as CM Punk, and continues to wrestle on the independent scene.
Original Story: Drax the Destroyer is entering the octagon.
At C2E2 Sunday, wrestler-turned-MMA-fighter Phil "CM Punk" Brooks announced at his spotlight panel that he will be co-writing a new Drax comic series for Marvel. Neither CM Punk's co-writer, nor the artist, have been announced for the series said to launch in late 2015. This will be the character's first solo ongoing series since his creation in 1973 by Jim Starlin and Mike Friedrich, and comes after a rise in popularity for the character due to the Guardians of the Galaxy movie.
Since leaving the WWE in 2014, CM Punk has written a number of comics in anthologies such as Marvel's Thor Annual #1 and DC's Startling Sports Stories. The athlete is a long-time comics fan, hosting events at Chicago's Challengers Comics + Conversation on numerous occasions, and making several notable superhero comics references in his WWE performances such as borrowing the Thing's "It's Clobbering Time!" motto during his ring entrance.
Interestingly enough, the actor who played Drax in 2014's Guardians of the Galaxy movie, Dave Bautista, has ties to both wrestling and MMA like CM Punk. After leaving the WWE in 2010, Bautista entered extensive MMA training under Cesar Gracie and competed in an independent MMA event, winning his first (and currently only) MMA match against Rashid Evans.
With the announcement of this upcoming Drax series, all of the team members of the cinematic Guardians of the Galaxy -- Star-Lord, Gamora, Rocket Racoon, Groot, and Drax -- now have solo comics series on shelves or in the works. That's in addition to the main Guardians of the Galaxy series, the spin-off Guardians Team-Up and the other team, Guardians 3000.