Spider-Man: The Animated Series Season 4 Episode 7

When Miriam uses the recombinator at the nightclub, the beam reflects off a disco ball and hits two men, one with a mohawk, another with blond hair, both of whom turn into vampires. After a brief struggle with Morbius, she uses the recombinator again, but it repeats the same sequence of beams reflecting off the disco ball and hitting the same two men. The only difference in the second sequence is that the images are reversed.