It’s already known that Fourze’s summer will feature few Space Ironmen, but who are they?

Created together with his sister from Cosmic Energy. They were both made by the Federation of Alicia. When they woke up, they had their own will and decided to rebel against humanity.
Skydain has two blades on her arms that she can fold out. While, Grandain has a chest cannon called GranBuster X.
They refer to each other as Brother and Sister.
The third Space Ironman, Black Knight. He works together with Inga Blink, from the Federation of Alicia. Instead of offensive attacks, he relies on his strong defensive armor. On his chest, he has a machine gun mounted. As a weapon, he uses a rapier called “Blackest Leaver.”