[Western Crossover] The Unconventional Superpowered Twins

Cosplay transmigrations aren't rare anymore, but who could have told me it would happen so suddenly? ...Who told me to write such an incredibly weird headcanon? Who told me to get carried away and pull out my wallet to give my friend a Robin-dog setting? Who told me to cosplay Lord Joe? If this were a normal situation, I'd be screaming my head off that I could actually transmigrate. But this is not normal. Even more terrifying, when I opened the door, I found myself in a pitch-black alley. The one familiar thing was the Bat-Signal hanging high overhead, and I could hear the obnoxious laughter of a lunatic nearby. I, Lord Jonathan, was holding the leash of a Robin-dog who could no longer speak human words. Her: "Woof, woof!" Me: "...I really am awful." Content warnings: This should wrap up in a few tens of thousands of words. Weird setting, pseudo-dual genderbending (the original female body becomes male). There are secrets, but let me write until we get there before I explain. There will be murder, murder, and more murder, and everyone will suffer!!! This started as a joke while chatting with a friend! I fleshed it out and decided to start writing. Anyway, find your way home, Jojo! Theme: Keep transmigrating, Jojo!