Grenade Launcher is Snake's Final Smash in Super Smash Bros. Brawl. He can only use the move once he has acquired a Smash Ball. Snake will jump out of the screen and come back riding a helicopter at an over shoulder view. He will also be heavily armored. He will get a huge rifle that shoots grenades and he will get to use it on his opponents until his time using the move is up.
Snake's Final Smash. He grabs a ladder hanging from a helicopter and appears in the foreground, then fires a grenade launcher at foes. The grenades explode on impact and damage anyone in the vicinity. Each clip holds six grenades--empty one, and Snake reloads. He can fire a total of twelve shots, but with such limited time, it's better to shoot 'em all.