Cap and Bonnie were genetic creations made from a lab in England. (Cap was then named Entity-4985 and Bonnie was Entity-1840) However, after 12 years of abuse, Cap finally had enough and would escape the lab and bring Bonnie along with them. Luckily they did escape.

After that whole ordeal, they both now live in an allyway (they do have some furniture that they found on the streets, so they don't really mind) and during that time they made a few friends and a lot more enemies.

Cap is nonchalant and chill, but they like to run and hop from rooftop to rooftop (mostly from police) and graffiti is a huge passion of theirs. They just like the rush of danger, but Cap is still very protective of their sister and is willing to fight anyone that threatens both of them.

Bonnie is more quiet, not one to run out unless if she needs to. She keeps to herself mostly. Although she does look up to her brother (?) so she likes to look cool just like them. She has a fear of being caught, either by the scientists that created her, or law enforcement. That's why Cap is protective of her, even teaching her how to fight on her own if she needs to. (Especially while being in the dangerous part of town they're in.