Stuck like a Batarang between the twin traumas of Avengers: Endgame and Game of Thrones' season 8 Battle for Winterfell is the last episode of Gotham, ever. After five seasons of serving as a prequel to the Dark Knight's arrival, the series finale, titled "The Beginning", jumped ten years into the future, to a time when Commissioner Jim Gordon (Ben McKenzie) is a weary man with a glorious mustache, Jerome Valeska (Cameron Monaghan) is a white-faced Joker cracking wise above a vat of chemicals in a cheap purple suit, and Bruce Wayne (David Mazouz) finally puts his greatest …