Batman: The Animated Series seems like the only superhero series to escape the inevitable back and forth of popularity and backlash

https://www.pastemagazine.com/tv/hbo-max/batman-the-animated-series-episode=
s-streaming-legacy/

"So why has BTAS eschewed this cycle?" asks Daniel Dockery. "Aside from the=
 fact that it is, as anyone who=E2=80=99s seen it will attest, a really goo=
d show, it=E2=80=99s also the series that would blend the macabre Art Deco =
Gotham City of the recent Burton films with a film noir-ish sensibility, ma=
king it look unlike any other show on TV at the time. After the 1980s, a de=
cade when most cartoons mainly served as extended commercials for correspon=
ding toy lines, Batman=E2=80=99s adventures were pulse-pounding and iconic.=
 Heck, it=E2=80=99s the series that made Mr. Freeze interesting, and the on=
e that birthed the character of Harley Quinn, who shot up the ranks of iden=
tifiable DC Comics characters in a way not seen since the 1940s."