Metroid/X series (tag in japanese as メトロイド/Xシリーズ) starts since 1998 in high school due to specific games like: Megaman X and Super Metroid. In 2002, since the game release of Metroid Fusion, this crossover has been unleash until it came a comic itself.

This article will tell you which images belong to the Metroid/X series as an example to distinguish from the original series to this crossover series.