You might remember Jeff Smith from his award-winning masterpiece, Bone. RASL is another great story, but it's geared toward an adult audience.
The tale revolves around Dr. Rob Johnson, or "RASL." A scientist in our universe and an art thief in all others, he lives on the run after stopping a government-funded energy experiment based on notes found in Nikola Tesla's stolen journals. Jumping from universe to universe, he evades capture while working to stop his old lab partner from rebuilding a machine that would destroy entire states at a time. It's pretty wild. If you're into historical science fiction, cool guys with tattoos, damsels in distress, and inter-dimensional noir shootouts, this is probably your speed.