The Incal: Kill Wolfhead, bd

Kill Wolfhead has been called many things in his long, storied life—Lover (Galaxy’s Greatest), Fighter (Freedom and Otherwise), Entrepreneur (Five Franchises and Counting), and Intergalactic Hero (He saved the universe! Twice! At least!). But you don’t live that kind of life without making some enemies… And those enemies are now out for blood.
After a vicious attack, Wolfhead is left in a coma, and his only possible hope for a healthy return is a dangerous, experimental technology in the hands of the children he's abandoned in his Lothario wake. In order to save their wayward father, his children must go into his damaged brain-space, but all is not what it seems.