Indeed, the Chozo built the organic super-computer "Mother Brain", back when Planet Zebes was a habitable locale.
Then the Space Pirates stole/corrupted it, later on.
The Chozo created the life-form "Metroid" (its name means "Ultimate Warrior" in Chozo language) in order to fight a parasite species (X Parasites) which began to take over the planet SR-388.
(https://castlevaniadungeon.net/forums/proxy.php?request=http%3A%2F%2Fmms.businesswire.com%2Fmedia%2F20140113006752%2Fen%2F399056%2F5%2FsWARRIOR_02001990_0005.jpg&hash=b6fd43e18d9d70cb8ca2ce38d06cfcfeeee3cfb2)(https://castlevaniadungeon.net/forums/proxy.php?request=http%3A%2F%2Fstatic.giantbomb.com%2Fuploads%2Foriginal%2F0%2F3447%2F194881-metroid_2.jpg&hash=ea9b3059ab1ed2132a9d0cdde997ede88dbd8939)
The resemblance is uncanny.
The Metroid did their task.
However, after Samus went to SR-388 to exterminate the entire species, and their Metroid predators gone, the X begin to repopulate.
It's possible that similar technology used for the creation of Mother Brain was used to create the Metroid life forms, since they both come from Chozo technology.