The Great Mother is the matron of all winged Invaders, exclusive to Metal Slug Attack. It first made its debut on the game's event titled 'Try Line 2nd', where the boss can also become a playable unit.
The matron of the Winged Invaders. She's come to check in on her sweet children as they work towards world domination. The impressive flapping sound of her wings causes all those in the cosmos to feel an equal amount of fear.
- ~Metal Slug Attack in-game description.
In Metal Slug Attack's event, this boss is fought at the last stage. It unleashes a jolt of electricity with a red core on its forehead as its regular attacks. This piercing attack can also dish out rapid damage over time and has a long range. To add insult to the injury; this attack is also capable of stunning the player's units.
- In the game's files, she is referred to as "Toucyuukasou" (ノムシタケ属 in Katakana) which translates to Cordyceps, a parasitic fungus.