Ridley
You can’t beat Ridley, captain of the space pirates and long-time rival of Samus Aran, at least not when you first find the beast stealing a container in the opening of Super Metroid. If you’re very quick and very careful, you can actually do enough damage to make Ridley drop his loot, but it’s a small victory, as he quickly scoops the metroid up again and flies off, no worse for the wear. Next time, Space Pirate!