Okay, so if you said you just knew the first season of the DC Universe original streaming series Doom Patrol was going to come down to a battle royale between giant mutated versions of the Curtis Armstrong-voiced Ezekiel the cockroach and Robotman’s rat nemesis Admiral Whiskers, you’d be lying — and yet here it is, the fifteenth and final episode of the first season, titled “Ezekiel Patrol,” delivers an ending no one could have predicted after an entire run of episodes loaded with “no one could have predicted.”

There’s more to it, of course : there’s the missing backstory that fleshes out the massive, and ugly, revelation laid on the team at the close of last week by Timothy Dalton’s “Chief” Niles Caulder; the uneasy detente achieved between Joivan Wade’s Vic Stone and his father, Silas (portrayed as ever by veteran hand Phil Morris); the failed attempt at a “normal”…