Tinbot

From Wikitroid, the Metroid wiki

Tinbots are robots that can be found at SkyTown on planet Elysia. They are incredibly weak enemies. Their weapons are weak kinetic beams that do little damage and just push Samus Aran backwards, and claws that are very easily avoided. If both of these weapons are destroyed, it will shoot puffs of steam at you that do no damage but will push Samus away. They can easily be destroyed by knocking them over with a missile or the Boost Ball. If defeated with the Plasma Beam, they melt into a liquid puddle and disappear. Some can enter Hyper Mode. Those that enter Hyper Mode become heavier and can no longer be melted.