Thunder's serum

Thunder recreated and modified a powerful serum that has a number of effects. However, he is never seen personally using it.

Serum's effects
When a young kitten name Hector fell into the serum, it cause him to overdose. This made him into a monstrous cat that can only speak the word Kill

Later, when Queeva became the CF leader, she used the serum to create Nyx, a clone of Steve. Queeva was hoping that Nyx would be a bad girl that would help her, but Nyx feel attracted by Steve because of their similar DNA. Nyx then became a AF and allie.

Thunder's serum is also being used by Queeva to create a clone of Minetto (not Minette, MinettO)