Its so cute seeing them hop together, and their cute little cries, and…okay nvm. I want to make an awesome battle combo that makes them help each other out. So, I need a combo for them that makes them complement each other to the fullest. (lol fancy talk). I'm not specifically askng for a moveset, but add one if you want to.
When they have Plus and Minus, their Special Attack and or their Attack will rise. So when you put them both in a battle, their stats rise. Helping hand is also a good choice to raise the power of their next move.
Hope I helped! :)
Try teaching them Helping Hand. It will really power up moves.