Whats the guy herobrian?!?

I heard about the guy herobrian!?!i have no idea what that is.is he a hacker? My friend Luke saw him.I still love the game.also I need more UPDATES!!!!!!!!!!!!what about the end and the wither I need those please. Servers are awesome I love lifeboat bounty hunter it is awesome that is why I like Minecraft thank you for this app.⚔⚔PLEASE ADD PISTONS

Awesome guy 2123 about Minecraft: Pocket Edition