Near the end of the Invader's cave, a group of Flying Parasites are seen huddling each other until one of the player characters jumps out possessed with the Controller latched to its back. The Controller's host is the character who was seen falling in the final mission's cutscene, which depends on the characters that Player 1 and Player 2 were controlling at end of Mission 4. The host becomes unselectable for the entire mission.
|Player 1||Host||Unless Host is P2|
The Controller's host's attacks include having the host alternatively fire green Heavy Machine Gun rounds while somersaulting, a rocket with green flames, and a green Flame Shot. When close, the host uses their melee attack (hatchet/tonfa/knife). Sometimes, they'll throw a grenade or fire a small shot of their pistol. A garbled announcer can be heard when the host switches their weapons.
Attacking the possessed host will destroy the Controller. When the Controller is destroyed, the character gets up but sits down exhausted, and a SV-001 Type-R drops from the ceiling. If the player waits for a few seconds without taking the Slug, various items appear at the bottom right corner, and the player automatically exits the arena.
|Heavy Machine Gun|