Gerutas are enemies in Super Metroid, that live within Norfair. They are similar in manner to Reos and Holtz, and attack similar also. They can survive in the extreme heats of Norfair and have a fierce aerial dive attack.
 Super Metroid
Upon detecting Samus Aran, they execute an aerial dive at her to damage her. They have armour-plated wings and as such are very resilient to Samus's weapons.