Head over to Raisins to meet up with Mosquito. There are several potential selfie partners here but most of them will have specific requirements like buying the Raisin girls’ expensive Selfie passes or guys requiring specific character classes or costumes. Mosquito is found in the rightmost side of the room. Take your seat to trigger a short cutscene and shortly after, a fight with the raisin girls. You’ll get a chance to edit your party if you wish so.
The battle starts with Clyde/Mosquito charmed by the raisin girls. You can use inspection mode to view every combatant’s status. You can use this to check how long the Charmed status will last.
Porsche and Ferrari are squishy enemies so you should be able to take them out instantly. Lexus is the enemy team’s bruiser, capable of taking heavy damage and also inflict good heavy damage in return. Mercedes is capable of charming your allies. She will always stay as far as possible, forcing you to fight your way through her allies before you can reach her. Heal up as necessary then trigger an Ultimate when available to finish the battle.
After this battle, Raisins girls will appear as normal enemy encounters like sixth graders but they hang out usually near their establishment. Mosquito will then help you fill out your character sheet by selecting your kryptonite/weakness.
After selecting this, the mission will be complete and Mosquito will be unlocked as a Combat Buddy. The game will also give you a tutorial about swapping allies using the Allies app in your smartphone.