Solid Willem

Solid Willem, real name Sam, also known as Red Cumulon, or simply Solid, was an assassin, House operative and officer. Possessing an IQ of 180 and fluent in six languages, he was known as "the Man Who Makes the Impossible Possible" and his exploits made him into a living legend among the criminal underworld and later on the world, becoming a symbol of the Red Revolution.

Considered the only successful product of Les Enfants Terribles project, Willem was a clone of world-renowned soldier Willem Reid, along with his brothers Liquid and Venom Willem. Unlike his brothers, throughout the entirety of his life Solid would remain loyal to The House and a close friend to Eric House.