I like everything about the Hall of Justice's interior, especially that justice statue above. The late Alex Toth did a wonderful job with this. 👍

Otherwise it gets locked in a warehouse. Anyways, dats all.

And if none of it ends up anywhere in the series, it may end up in the promos: youtu.be/FWjn58XAPrU

And sometimes the footage from the pilot can end up becoming an outro: youtu.be/mhouishqT5M

And sometimes as-is, like in the COPS cartoon:
youtu.be/FRu406_XCJo

You'll easily spot those bits there as they stick out like a sore thumb due to being done fully in Peter Chung's art & animation style.

And then there's another scenario regarding the pilot: sometimes they'd take bits of it and incorporate it into an episode. Sometimes reworked as is the case with Ewoks: youtu.be/kt4hz0qzWyc

the sound effects.
4. Final aired version which replaced the intro and outro with final ones and revised a line so the character's pre-final mustached look would be addressed.

Even when a full pilot gets aired, it may differ from how it originally was. For example, "Inspector Gadget" has FOUR VERSIONS of its pilot.
1. Jesse White version, the original voice for Gadget
2. Garry Owens version.
3. Don Adams version which also has changes to the music track and some of

always full length (for example: youtu.be/hMucplM3CUk ). Sometimes a show can have TWO pilots. One short, one full. Like "Defenders of the Earth" - short pilot: youtu.be/T6dBKiuE6EY

Full pilot: youtu.be/A8iqQY4Kbpw

is actually EIGHT episode. Rarely the air dates were reliable and that's because deadlines would often be missed due to retakes and such and material having to go back and forth overseas.

Also, first episode doesn't automatically mean it's the pilot. Actual pilots often went unaired and weren't

"Some Enchanted Evening", but it got pushed back because the producers didn't like cartoony animation style so a lot of it had to be redone. 99% of the time you can see the proper order in the production code. So in this instance, the premiere episode, "Simpsons Roasting on an Open Fire"

-If you're talking about the way things move, THEN you're talking about animation. Animation is MOVEMENT.

Furthermore:
First aired episode isn't necessarily the actual first. Sometimes things get pushed back for variety of reasons. For example, Simpsons first episode was supposed to be

That's pretty convincing gouache-like coloring by Gemini over that Technodrome drawing. It really gives Krang's mobile fortress the evilness that it's worthy of. By the way, I recently watched and enjoyed the '87 TMNT cartoon series on Tubi.