This mistake accures whilst H.E.A.T. is being chased by the silver monsters: At one point instead of being chased by multiple beings, they are chased by the Siamese Monster (The multiple silver creatures fused together after Godzilla fries them, which happens later in the episode).
Caven: Kids love me.
(Meg hides behind Monique)
Randy: You certainly have a way with women, Doc.
Meg's Brother: Godzilla?
Randy: Don't worry, he's with us.