His family was killed by gangsters in front of him, he grew up under the wing of a local drug dealer who took him in. He learnt only hatred and violence, he was taught to steal to survive, to kill if needed, and to always carry a sharpened blade, eventually after a run in with his landlord (in which he cut the mans' hand off with a cleaver) he was sent to prison, he learnt how to live the prison life, how to kill a man in the shower without It getting pinned on him, he learnt how to hide a parcel of drugs on his person. When he got out he decided to steal burgers for some reason, I don't know, it's a hobby
They already made their kids' meal creepy. There's no harm in adding another creepy character. Then change Ronald to an even creepier character, worse than the Joker.
THATS NOT MARIACHI