Splatoon - Squid/Octo Sisters

And so the Squid Sisters became Daft Punk.

You know what would be an awesome AU plot?

Both Marie and Callie got brainwashed, so Pearl and Marina (who are secretly agents) sends you to save the Squid Sisters. The final fight would be a duo battle between Marie (who rides the rails, initially untouchable and shoots you from time to time) and Callie (who wears armor and tries to hit you with a melee weapon).