It’s hard these days to make a superhero movie without teasing another superhero movie to come, and DC’s Blue Beetle is no exception. The film — technically the first release in James Gunn and Peter Safran’s complete reboot of the DC movie universe, now branded as the DCU — saves one of its bigger mysteries for a possible sequel, and teases that sequel in a mid-credits sequence. There’s an end-credits sequence, too, but that one does its own thing entirely. Let’s dig in. (Spoilers ahead for Blue Beetle.)