Suzi X says that she doesn't wear panties and doesn't put any on during her costume change, but during her fight with Velvet von Black, a pair can be clearly seen after the back of her jumpsuit gets ripped off.
(at around 17 mins) The cloak and bra that Velvet removes during her theme song disappear from the stage in subsequent shots.
In the closing credits, "Ride of the Valkyrie" is credited to "Richard Wilhelm Wagner." Actually, his full name was the other way around: Wilhelm Richard Wagner.