I'd go for the Holy Ghost who's obviously a bit of a wuss but poses some threat, especially of unexpected impregnation. Jesus is no trouble at all because with nail holes he can neither punch nor kick effectively, unless he thinks of turning all the water in your body into wine - he's obviously like one of those crippled superheroes with amazing mental powers.

Dawkins quotes a lovely twist on the ontological argument which disproves God's existence (inasmuch as the ontological argument proves anything at all) by pointing out that creating the universe while not existing would obviously be much harder than doing so while existing and hence a God who could do so would be more perfect.

I have always had a secret sympathy for the ontological argument, since it can also be used to "prove" the existence of the Space Battleship _Yamato_.