Place it at the start of the action, right after enemy spotted builds the tension and before okay let's go pushes the team forward. That order turns a simple lobby join into a full pre-match sequence for edits.
About this sound
This is an almost 12-second Smash template clip built around the 'Everyone Joins The Battle' reveal line, with the announcement energy of a fighter joining the roster. It feels triumphant and hype-building, like the room just realized every character is in. It comes from Smash on Nintendo Switch.