A Yameba(ヤメーバYamēba) (also known as X-clusters in Metroid Prime and Metroid Fusion: Prima's Official Strategy Guide) is an amoeba-like creature encountered in certain areas of Sector 1 in Metroid Fusion. It somewhat resembles a Meboid, Bang or Flitt in appearance, which would seem to suggest that the Yameba is an infected and/or X-mimicked version of one of the mentioned creatures. It is possible however, that this organism was an entirely new creature which Samus has never encountered before that was among the captured specimens of the Biologic Space Laboratories.