Welcome to Metroid Answers. What would you like to know?

It will remain a mystery. I think that they just try to constantly improve themself for battle so they go through surgery so they can opt themself for any battle situation. You know what, I don't know. I count the pirates in MZM and Super Metroid as what pirates look like.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.