View your player profile by tapping on your character avatar and name in the top left of the main screen. From here, use the edit buttons to change your Avatar, Display Name, and Title.
Your player profile is visible to yourself, your Clan mates, and to the Masters and Ninjas of any private Clan you have applied to. Player profiles show User ID (important to know for Clan invites, support tickets, and community contests or giveaways), Dimension Clash Rating, Last Squad Used and Squad Power of your 5 strongest heroes.
Titles and more Avatars can be earned through Quest and Event rewards!