Its abnormally well written for a childrens cartoon. I watched it for the first time as an adult but I was genuinely entertained by this little kiddie cartoon on the telly, partially cause Im a batman fan but still. I wouldnt go as far as to say its the best childrens show ever but I cant find any competitors. The Indiana Jones style episode where he goes across the world after Ras Al Ghul is the episode I remember being the best, although most people would say the Mr Freeze episode being the best (Fucking emo bait episode). The Clayface origin episode is also very good, just lots of good writing and a very good formula. Mask of the Phantasm is also a very good bookend for the show.
Honestly the entire animated series DC universe they had for the 90s/early 2000s was better then all the live action movies combined. They really knew how to sneak in adult subtext while still making palatable shows for kids. Some of the villains in these are really hardcore. Ultimately the single greatest strength of this franchise is how much it actually develops batman as a character and gives him a proper beginning middle and end to his saga. This really does feel like the most fleshed out version of Bruce/Batman ever made
Here's a general cliffnotes of the rest of the franchise.
The New Batman Adventures: Basically the final solo batman series, that eventually tied into superman. I remember loving this way more as a kid then the original. The original is good no question, but this is showcasing an even darker and more cynical batman. A brick shithouse of a human being that acts like a beat cop who's seen too much to smile . The art style is not everyone's cup of tea but I rather liked how cartoonish and grim it was. Has the best version of Scarecrow and isn't afraid to get really intense.
Dude almost made batman kill him.
Superman: Love it. They knew how to write Superman as a compassionate badass with a decent amount of intelligence. Tim Daly is probably the best version of a Straight A, Heroic Superman. Also has quite possibly the best superman opening theme.
The biggest strength I think is how they properly showcased his rogues gallery while emphasizing how he needs to protect everyone around him from collateral damage. Solid supporting cast, pretty much everyone here is the definitive versions of the characters. Especially Clancy Brown as lex Luther.
I just remember loving how dynamic some of the fights got. There was good interplay and Supes was unafraid to fight dirty.
The only real negative is the final season had a surprisingly dark ending that was supposed to be followed up with another season. Not a cliffhanger but still.
The little mini movie they had in-between that tied the series together was great. Quite literally the first time a serious meeting between batman and superman was made.
Batman casually Judo throwing superman into a table and ignoring him afterwards will seriously never be topped in live action.
Batman Beyond: I'm gonna get shit for this but aside from a really good premise, opener and design I think it's overrated. Not bad mind you, the relationship between old Bruce and Terry is extremely strong and the future stuff is cool, but the rogues gallery is pretty crap. The final movie with Joker is S tier though, They legit have an R rated version of it that is amazing. Their version of the final battle between Batman and Joker is just.. Its perfect. Just the mystery alone of how Joker came back was an amazing hook.
Justice League: The first season was a bit rough. Great Premier and some good episodes here and there, but you could tell they were not used to writing a team show. Eventually they fired everything on all 4 cylinders and from Season 2 onward the show was consistently excellent. Kevin Conroy's batman is the draw, but everybody else gets a lot of time to shine and bring their A game. Superman got a new voice Actor with George Newburn but really grew into the character and became my favorite version of superman. He's not a boy scout anymore and there's a world weariness to him, but he's still a hero. He fights against his inner cynic and pulls himself from the brink again and again. That's what makes him so interesting to me as superman.
The coolest part of seeing batman in justice league is seeing him ever so slowly start to lighten up bit by bit and realize how much the team means to him and the world.
Justice League Unlimited
One of the greatest DC works ever made. Im not exaggerating in the slightest. The whole basic idea is Genus. The earth gets invaded one too many times and the Justice league just say's screw it lets recruit EVERY superhero. Great writing and EXCELLENT continuity to everything that came before. Just perfect setup's and executions. They really did an excellent job showcasing the DC universe and writing satisfying stories. One of the best arcs running through it is the U.S government becoming more and more afraid of the justice league's power and responding violently to it.
Jeffery combs has a major role in season 1. What more can I say?
Batman's entire Arc has a full blown ending in this! it's pretty crazy. The only negative is they were not allowed to use batman villains, Because they had another batman show on the network running at around the same time. It was completely retarded but it ended up working out pretty well by showcasing more obscure villains.
By today's standards these are legit the best cartoons on the planet.