The PG rating is the most fitting in my opinion. It would allow just the right elements to be incorporated without being too risky.
My FAC and My InkBunny
You cannot escape the inevitable, Sonic. You shall be glomped forever because you are lovable. XD
Just to clarify, we're talking as if the comic series was rated, right?
PG for comical violence i suppose?
For the Australia rating system PG would be what I would expect, but I think our PG is different from the USA.