Continuity mistake: Before his first transformation, David is wearing a white and blue striped shirt with blue jeans. During his transformation he is wearing a red and blue square motif shirt with brown pants. When fully transformed into the Hulk, he is wearing blue jeans again. But when he's removing the rocks to free the professor seconds later, he is wearing a different kind of brown pants. Finally he's wearing blue jeans again for the rest of this first transformation.