The Flash draws on DC's extensive history to craft an experience honoring previous films, emphasizing the strengths of the current DC movie lineup, and hinting at what’s to come. The film represents a peak in the often-uneven journey of the DC film universe. The narrative, action sequences, humor, and surprise appearances all contribute to making The Flash a successful introduction for the Scarlet Speedster on screen. The movie's tone seems influenced by Marvel and Joss Whedon’s style more than by the DC films of Christopher Nolan, with jokes appearing frequently throughout. While controversy surrounds it, Ezra Miller’s portrayal of Barry Allen is enjoyable and well-executed; however, what truly elevates the film beyond mediocrity is its dedication to pleasing devoted DC fans through numerous callbacks and references. Ben Affleck's Batman delivers blows to criminals. Sasha Calle’s Supergirl displays her power against wrongdoers. But the most exciting element is Michael Keaton's return as Batman. His obvious pleasure at revisiting the role is palpable, and that enthusiasm captivates audiences in every scene he appears in. The other DC characters who make appearances also elicited enthusiastic reactions from the audience, and I’m confident they will continue to amuse viewers. Even with its constant humor, director Andy Muschietti manages to create genuinely emotional and poignant moments, which contribute to a more impactful and fulfilling conclusion. Though enjoyable, it isn't without flaws; at times the comedy feels overdone, and some of the character developments feel rushed. Nevertheless, The Flash is a fun, original, and entertaining superhero film that fans of the genre can appreciate.

Source on TMDB