When the Mushroom Mountain vs. Bamboo Shoot Village had its first Splatfest on the first Splatoon, it was Team Bamboo Shoot Village that won with support from Marie.
The Mushroom Mountain vs. Bamboo Shoot Village Splatfest takes place in Japan on August 18-19, 2018.
Now that the members of Off the Hook are involved, we have Callie & Pearl for Team Mushroom Mountain and Marie & Marina with Team Bamboo Shoot Village.
Europe is also getting a new Splatfest and it involves adventure vs. relaxing during the holidays.