Well, Detroit Comic Con doesn't have a fixed date. It usually gets announced a few months in advance. Keep an eye on the event's official channels or local event listings to find out when it's happening.
Comic Con in Detroit usually takes place in [specify the usual month or season]. But it's best to check the official website or local event listings for the exact date.
Honestly, I have no idea. It might be adapted from a lesser-known story or created from scratch by the filmmakers. We'd need to do some research to find out for sure.