bro Tidus can help with the water walls if they want to team up and basically barricade the areas where the Equalisers need to be set, keep out any attacking forces. He's got his own affinity for water and also a little water being that can manipulate/create more water.

So much water.

And just making water walls to keep out danger from where the Oranges need to work sounds like a lot less hassle than going around killing people, if it can be helped.