>>276
If by Usagi Yojimbo you mean the protagonist of the series, Miyamoto Usagi, then I think it would be an easy win for Tsukino, given that she has magical powers and he doesn't, as far as I can tell. If you mean that she has to fight the entire Usagi Yojimbo franchise, I think it may be a stalemate, as I can't see any clear way either could harm the other.

>>278
You with a kitchen knife attached to your nose vs an adult emperor penguin with a kitchen knife attached to its beak. The fight takes place on land. Assume you cannot disarm the penguin. You cannot detach your own knife, but you are not obligated to use it, and can fight with hands and feet if you prefer. The penguin understands how to use its knife, and is trying to kill you, but otherwise is a mundane penguin without any special intelligence or training.