Batgirl - 1967 - Unaired Pilot - HD

In 1967 a pilot episode for Batgirl was made, with the intention it appears to make the dynamic duo a trio.
The pilot never aired though, and it seems the idea was shelved.
Obviously this year(2022), the upcoming Batgirl film was also cancelled indefinitely, with no future release planned, although costs had skyrocketed into the many tens of millions of dollars.