Fan Casting Silverfish in Kanga and Roo (my Superhero OCs)

Very little is known on the allusive Joesph Silverflame, AKA the Silverfish. We know absolutely nothing about his family or his childhood. What we do know about him is that he was a former mercenary who was horrifically injured in a explosion, and was given cybernetic enhancements, leaving only his scarred, pale, hairless head and some internal organs as the only organic parts left under his silver and dark blue mechanical body, and a silver insectoid helmet.. His metallic, robotic insectoid body gives him enhanced strength, speed, agility and durability, along with enhanced senses, and his new robotic green eyes allow him to see in inferred vision and night vision. He is also equipped with arm mounted plasma blades, and cloaking technology that can make him invisible, though his cover can easily be blown if something like say mud or paint got him. As a way of starting a new life for himself, Joesph moved to the home town of the heroic mother-son duo, Kanga and Roo, making him the first supervillain the duo met (prior to this, Kanga and Roo only took on small time crooks and hooligans up to this point). After his first confrontation, Silverfish would form a criminal gang called the Firebrats, with his new henchmen wearing armor inspired by his own mechanical form (and without his invisibility or arm blades). He is also very honorable, having a strict code of honor he and his Firebrats follow, and having a pact of sorts with Kanga and Roo. And sometimes he will even team up with Kanga and Roo against more dishonorable and wicked foes.