The Difference Between Having MM On Your Team and Being Against Him

difference is that if he is on the opposite team and you win, he's like:
http://orig12.deviantart.net/2630/f/2011/046/f/6/mordekaiser_by_atothaz7-d39lx56.jpg

Well, I am my enemies' worst nightmare.

And way too jolly when playing with friends.

You mean the difference on whether he has me on his team or not.

Or if I am playing Yorick.

Or both.

Can I fight Malicious with his friends?

Btw Odarth, nice guild seal, I like it.