The second strip. Not much to say here really. The ass-biting gag didn't come as well as I had hoped. Plus I hate that 5 panel layout. I promise I won't ever do it again.
Metroid, Samus Aran, Space Pirates, and all that other stuff are properties of Nintendo. Contra is a property of Konami. All other characters are property of their respective owners. Pretty much everything else is property of me, unless specifically noted otherwise.