They're all Yu-Gi-Oh monsters.
Jeanie- Dark Magician Girl
Rex- Blue Eyes White Dragon
Steve- Armed Ninja
Alex- Machine Knight
St. Joan- herself

There are others, too, but they aren't here right now D=
Let's say that Jeanie and her crew didn't know what White Noise did, so skip all spell effects.

Jeanie swore. 'I don't know what he did, but whatever it was, we can't use spells...' Looks like things will have to be done the old fashioned way...