Spider-Man Fan Film (Donald F. Glut, 1969)
Galaxy Trio - Ep9 "Computron Lives", Ep7 "Titan, the Titanium Man" & Ep12 "Demon Raiders" (Hanna/Barbera, 1967)
Computron's ray gun turns people into robots, and...(spoiler alert) robots into people! Also, Titan, the Titanium Man and Demon Raiders!
Blackstar - Episode 1: "City of the Ancient Ones"
Blackstar must save the hypnotized sorceress from Overlord, and rescue the shapeshifter elf and gnome/dwarves from her magical ring!
Gatchaman - Episode 1 "Gatchaman vs. Turtle King"
"I will now guide you both to hell!" The Science Ninja Team infiltrate a gigantic robot turtle Mecha run by Galactor troops stealing uranium!