The Battle Emote ‘Flex’ can be applied to your Ninjala character to customise their behaviour at set stages of a battle.
By going into the Closet and then the Battle Emotes menu, you can change your victory emote, defeat emote, and your character’s behaviour when a match is about to begin.
‘Flex’ Official Description
“Flex for your admiring fans. Show off those bulging biceps like a buff bodybuilder.”
With the Flex emote equipped, your Ninjala character will pull several flexing poses often seen in bodybuilding competitions. This Battle Emote is likely here for use at the beginning of a match or in victory.