This episode of Weird Video Games looks at Revolution X, the notorious arcade game where you fight a tyrannical dictatorship and rescue the members of Aerosmith using guns that shoot exploding CDs.
There are two instances of women transforming in the game, both with visible process. The first is in the laboratory level, where women are being dropped into a machine that transforms them into the mutant enemies you're fighting. The second is Mistress Helga, the final boss, who turns into a big ogre for her One Winged Angel phase.
The first happens at 13:21, and the second at 17:01.