Their in-game sprites suggest they have a disproportionate body, as they have a relatively large head on a small body. The Geegas attack Samus by flying towards her with their large mouths open to harm her with their fangs. They are resistant to acid, as they can be seen rising out of pools filled with the substance in Metroid and its remake, Metroid: Zero Mission.
Like all other bioforms which emerge from Air Holes, it is assumed that Geegas have colonies built within the structures where they infinitely spawn from.
"They come out through air holes and fly sideways. There are two types and the brown ones have twice the strength."
"Flies out of the vents. As they are weak, it is easy to collect energy from them."
"It has horns with deadly poison, and charges at you with them. It often appears from vents."
|Color||HP||ATK||E||BE||M||SM||PB||Brinstar. Geegas appear from their pipes at all the wrong times. They're quick.|
"The Geega emerge from certain pipes in the complex. Usually, they're too quick to hit so it's best to memorise where they emerge and be ready to take evasive action."
Cancelled Metroid Fusion appearance
Geega sprites exist in the data of Metroid Fusion. The sprites (presented below) show Geegas with an unusual purple color scheme, as well as bat-like wings, spikes on their backs and enlarged claws. These different traits were undoubtedly caused by the X Parasites' DNA manipulation in their attempt to make the Geegas more fearsome and possibly stronger (as is the case with most of the X's mimicries and victims). If added back into the game via modding, the Geegas can be seen burrowing out of the ground, rather than Air Holes, which do not appear in Fusion.
- The Geega bears a similar name to the Dessgeega species, but has no known relation.
- In the Captain N: The Game Master episodes Kevin in Videoland and Metroid Sweet Metroid, Kevin and his friends are attacked by purple monsters while exploring Metroid. While they are not referred to by name, their similar body shape, eye stalks (not dissimilar to the Geegas' antennae), large mouths, and wings suggest that these creatures may be Geegas. Like most Metroid enemies, their appearance in the Nintendo Comics System adaptation is much closer to their original concept art.