Emotes are a unique way to communicate with your team members and your opponents in-battle and on the post-battle screen.
You can see your Emote selection by tapping your avatar picture and then head over to the "Emotes" tab.
Each player can use up to 4 Emotes. The Loadout section displays the ones you're currently using.
To replace an Emote, tap the one you wish to replace and then the Emote you wish to use instead.
All players start out with a few free emotes, with others being available to unlock via the Fan Club passes or bundles.