Two things in particular surprised me about this movie, striking me in different ways.  First, it is genuinely funny.  There were several times where I had to stop myself from laughing at the shenanigans in the film, especially when the Turtles find their way into the Batcave.  Some of the best gags from the comic make their way over to the movie (my personal favorite being Mikey’s wipe-board presentation on why Batman may and may not be a cool dude), and there are tons of little throwaway lines that have a great payoff.  Have you ever wondered why Gotham has so many blimps flying around?  Rest assured, the Turtles do too, and they find out their purpose in one of the movie’s best jokes.

Batman also has some fun in the movie, as he’s presented as terse and gruff, but not without a sense of humor.  It’s refreshing to see a Batman who isn’t a jerk and lets the sillier personalities of the Turtles win him over.  Sure, he’s not cracking wise alongside them, but he doesn’t treat them like they’re idiots for being goofballs either.  In fact, he shows each of his allies great respect in different ways, from Batgirl to Robin to each of the four Turtles.  Like I said, it’s nice to see Batman value and cherish the presence of others in his war on crime, and even more to see him relate to them on a personal level.
— Read on batman-news.com/2019/06/07/batman-vs-teenage-mutant-ninja-turtles-review/