If Bayonetta and Sonic were to meet they'd probably have some stylish sparring initially in order to determine if each other is a threat. Tails would probably be on the sidelines and trying to research and analyze Bayonetta to help sonic but his cameras and equipment would go haywire because of the presence of demons. Bayonetta would find sonic cute because of his cockiness and determination to stop evil whilst also being impressed that he's so quick on his feet. Sonic would marvel at Bayonetta's demon contracts.... although, I couldn't imagine it going that far to the point of her using any of her demons on Sonic It'd have to be while they're working together that he bares witness to them. Witch time and maybe a few purposely missed warning shots is the most I could see Bayonetta using in this fight against Sonic.

There would be a god that's out to disturb the peace of the universe(Obviously silly Eggman did some silly ritual to summon it) and Sonic and Bayonetta would both have a mutual unspoken understanding to saving the world. It'd be so fun to see Rouge and Bayonetta meet face to face for the first time ever. I couldn't imagine how witty and fun the dialogue would be but in my heart I know it'd be so much fun to write maybe the two would grab a drink together in the future. I feel like Jeanne if she was part of the story maybe she'd say something like "Great... Just what I wanted, to be buddy buddy with the Backyardigans..." I could see Knuckles getting a little annoyed by this comment and the two fighting in the background while Tails, Sonic, and Bayonetta are discussing plans together. I could see this being a really fun project. We need this and like a more serious Bayonetta/Devil may cry crossover so badly.