Super Robot Wars: BESM Generation
The first alien race to make contact with mankind. They attacked immediately.
Nobody knows what they actually look like, but their mobile weapons look like large crickets. Their vessel looked like a giant conch shell. It imploded when heavily damaged, suggesting some sort of singularity based power source.
Talia says their true name is the “Ki’lakka’klak’ik”.
Nobody knows yet if more are on the way, or how many they will bring.