Dude who was those guys in the end

Are you talking about the world they fell into? They're from Jinjuu Houretsuden. The older them. If your talking about the guys watching them when they came back, idk, I can't remember what happened in g-defend.

if your talking about the guys at the end (the one who a picture and the other two) then they are probably new characters in the G-Defend series but in the new chapters which sadly haven't updated.

Thanks ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄ for the reply