The 89 film into the 90s Batman series were four films - and would have been five
Michael Gough as Alfred and Pat Hingle as Jim Gordon connect the four
They all follow on from each other and tell a four movie arc
Yes Batman changed - Keaton, Keaton, Kilmer, Clooney
Yes Robin was only in the last two
We worked through the Rogues Gallery
Joker
Penguin
Catwoman
( yes - Max Shreck - )
Two Face
Riddler
Poison Ivy
Bane
Mr Freeze
there was talk of a Batman 5, though it wouldn't be called
that there was talk it would be Clooney again
Talk was Scare crow would have been the villain
As it turned out, we had Scarecrow in Batman Begins, first film of the new reboot,
and while Clooney never got the chance to play the Older Bruce/Batman again, we saw Affleck do that
We didn't get to see the Jason Todd storyline told and probably never would have
So YES - that series WAS a Trilogy - then became a Quad and would have been a Quint
