Sludge’s origins are unknown, only that he was made in a lab. Brick was named before she was born, it also fitted how clumsy and strong she is, like throwing a brick at someone's head. Because of her strength and clumsiness, Brick is very shy and single. Until she met Sludge. You see, Brick downloaded this dating app called ‘Tinder’, she then gets a date with Sludge. Despite Brick’s… strength, Sludge asks if they could go on another date soon. They then develop feelings for each other.