I created a radiation-based-device, that isolates and manipulates radiation waves to mutate cats into feline humanoids.
I then arm them with steam punks weapons and armor. Fusing the natural curiosity of cats with the chaotic intellect of man, their genius allows them to craft weapons and armor out of general materials.
Their ears are capable of picking up ultra high and low frequencies, and their vocal chords are modified to produce such frequencies as well, allowing them to communicate while hunting without alerting their prey/victims.
We regularly participate in meetings discussing how to take over the world, which generally devolve into orgies.
Select, elite members are capable of regressing to their original feline forms, allowing them to commit grand acts of espionage against society.