costplay help with strict parents

ok usually i dont post but im really stuck on something and i need help, i want to costplay as lucifer morningstar from hazbin hotel. i will diy the costplay btw. but the problem is that my parents are SUPER religious and will definitely freak out of I'm dresses up as a literal demon from hell. so i need help on what i should tell them the cosplay is, i also need help in trying to find a character similar to him so i can say its that character. anyways ill post updates about the cosplay if i end up doing it.