The Ace Killer Squad (エースキラー軍団 Ēsu Kirā gundan) is an alien mercenary group lead by an individual who is also their namesake.
Little is known of their history, besides the fact that they work under contracts and that Yapool knows and fears them. This mercenary works means that they also at times work for even the Star Cluster Alliance.
- Ace Killer: The leader
- Alien Nepenthes: The team strategist
- Alien Woovelve: A member
- Others: They serve as grunts
- The Ace Killer Squad are obviously based on the Terrible-Monster, given their membership, their name and the fact that they have some manner of history with Yapool.
- Despite this, only Ace Killer is actually based off an actual Terrible-Monster.
- See Also: Unused Ace Killer Squad Concepts