

It serves as the Space Army's Ultimate Boss. The Invader King which its proper name was revealed was introduced in Metal Slug Attack as a playable unit. The Vulcan's rate of fire is handy for destroying the waves during free-fall. The Slug is useful for its high jump to launch cannons on the Invader King's face and to dodge its speedy attacks by quickly exiting and entering the Slug. The player has access to the SV-001 Type-R found in the previous section after defeating the Controller.

Depending on the route taken in Mission 4, the heroes are miraculously saved by either Morden or Rootmars. It blinds the heroes making them fall to their doom. The Invader King falls and implodes causing a colossal fireball. The heroes barely survive by hanging on the very edge. The Invader King is invulnerable at this state until it eventually falls to its impending death. These waves must be shot at in order to avoid getting hit by them. The Invader King produces waves that fall in wavy patterns. Once defeated on the sixth platform, it slips from the walls and takes the heroes into free-fall. Sometimes its body will light up and produce energy waves that fly in at various directions the green waves can be destroyed for items.Īs the Invader King takes damage, it breathes out a wave that snaps out the squishy platform beneath the heroes and slowly climbs down. The Invader King breathes out various energy blasts. It can also shoot an eye-beam that slowly follows the player.

That is until it beams its eyes up and starts the fight on its own. With the help of the Rebel Army, the cocoon is destroyed, and the Invader King is presumed dead. The Invader King itself is situated inside of a cocoon producing new Invaders. Reaching there is a large cavern full of organic and fleshy structures. True to his word, the Invader King, alongside most of the Invaders, is located deep underground. They were excavating the ground in Mission 1 to find the Invaders' base. Both factions attempted to rescue Rootmars from the ocean before the Invaders came to attack.

Morden explains that the Rebel Army and the Martians formed a new alliance to get rid of the Invaders. Originally, information of the Invaders was unknown to the Regular Army prior defeating the Iron Sentinel and seeing the Invaders.
