A comparison between the clips used in the ‘Scooby-Doo, Where Are You?’ Series 2 Intro and the clips as they actually appear in episodes (the ones I could actually find).
I have concluded that the still shots such as the skull and the image of The Creeper are purely like concept art and that those exact images are not used in the Series proper. This includes clips from both series 1 and 2.
If you liked this video, you check out my comparison of the Series 1 intro here: https://youtu.be/H0QIOawQA1k
License- Creative Commons Attribution license (reuse allowed)