7. Rick Grimes (The Walking Dead) & Charles Gunn (Angel)
How cool it would be to see these two men - both of whom have led their groups in battles against differing hordes of the undead - meet each other and share their experiences with each other (and maybe kick some zombie and/or vampire ass together if need be as well). Both of these men are commanding tough guys with stubborn personalities so, as well as the good things they could offer each other, it would also be interesting to see them potentially clash. Rick is the man who woke up in hospital in a post-apocalyptic zombie world. A sheriff who will stop at nothing to save those close to him and who has saved countless lives from the zombie threat. But he's also a man who likes his own way and doesn't like to be challenged. Gunn is the hot-headed ex-gang leader who kept his friends safe from vampires on the streets of Los Angeles and ended up joining Angel's 'fang gang' as the muscle. He 'likes to hit stuff'. Who would be in charge if these two found themselves fighting on the same team? It'd be interesting to find out.