Metroid

Metroids are parasitic alien creatures from the series of the same name. Their first appearance in a Mario-related game is Wario Land II, in which it makes a cameo as one of the treasures. Metroids themselves have gone on to appear within a few microgames of the WarioWare series as well as in later Super Smash Bros. installments as an Assist Trophy.
==In Wario Land II==
A Metroid is the hidden treasure for the level Don't shock the owl!. The Game Boy Color version depicts it as having a blue sprite.
==In ==
===Super Smash Bros. Melee===
A Metroid makes a cameo appearance as a trophy. Like several other trophies, it can be obtained as a random drop. 
===Super Smash Bros. Brawl===
A Metroid is introduced as an Assist Trophy, making its first non-cameo appearance in the Super Smash Bros. series. Aside from this, there is another trophy of a Metroid and two collectible stickers of it.
===Super Smash Bros. for Nintendo 3DS===
Aside from returning as an Assist Trophy, a Metroid also appears as an enemy in Smash Run.
==In ==
===WarioWare: Twisted!===
A Metroid is present in level 3 of the microgame Metroid-Samus, in which the goal is for Samus Aran to use her Arm Cannon to shoot at a Metroid a few times as it tries to latch onto her. This is unlike earlier difficulty settings, in which Samus only has to shoot an enemy once to defeat it.
===WarioWare: Touched!===
There is another microgame named Metroid, and the object is for the player to use their Stylus to drag the Metroid off Samus.
===WarioWare: D.I.Y.===
Two Metroids are featured in the downloadable microgame Metroid. The object is for the player to destroy both by tapping them with the Stylus, upon which Samus pops up to face the screen. In Assembly mode, the Metroids are named METROID1 and METROID2.
===WarioWare Gold===
A Metroid reprises its role in the third difficulty setting of Metroid-Samus.
==In Donkey Kong Country: Tropical Freeze==
A Metroid makes a cameo appearance as an Easter egg in the background of Amiss Abyss. It can be seen when the Kongs pass the first signpost and giant illuminating statue, reach the end of the trench, and then backtrack to the statue. In doing so, a Metroid can be seen floating upward from the seabed in the background.
==Timeline==
The following concerns the appearance of Metroids in Mario-related media:
==Navigation==
Category:Assist Trophy characters