Crossover - they'd be like rival siblings

This is pretty much most people who ever met AM's voice actor/writer Harlan Ellison, who was notoriously a walking, talking Napoleon Complex.

No, he was only there years after Walt died. During the production of the film The Black Hole, Alan Dean Foster was hired to write the film's novelization and was so appalled by the bad science that he told them the script needed big rewrites for it to be more scientifically accurate, as unlike Star Wars, Black Hole was supposed to be a grounded piece of science fiction. Ellison was brought on as a science consultant but was fired on his first day because at lunch he pitched an animated porno movie starring classic Disney characters, even acting out lewd acts. He was unaware that Roy E. Disney was at the next table, heard and saw everything and had him fired right away.

Ellison insisted he was just joking, but he was a notorious liar like, speaking of Alan Dean Foster, Ellison claimed Foster hated George Lucas and vowed to never work with him again after writing the novelization of A New Hope, something Foster later said was blatantly untrue, especially seeing as how he worked with Lucas to write the first Star Wars EU novel Splinter of the Mind's Eye in late '77.