Directly to you from Twitter:
Narcian from Fire Emblem: The Binding Blade is 1 of 3 Wyvern Generals of Bern. Clear his Grand Hero Battle map in… twitter.com/i/web/status/8…—
Nintendo of America (@NintendoAmerica) February 10, 2017
…Wanna play? Buy a 3DS.
That being said, click on Fire Emblem Heroes for everything you need to know about the game. 😀