From The Line It Is Drawn, week 236:
In honor of DC’s Convergence event, let’s expand the concept to ALL comic book companies and have you choose two comic book characters from different points in time fighting each other. So, say, 1990s Superboy facing off against 1960s (Ditko-era) Spider-Man. There’s almost an endless array of combinations, so go nuts!Twitter follower KeithAlanMorgan suggested: Bill Everett’s Hydroman vs. the Sub-Mariner
Check out the amazing work by the talented Liners here.