Zoinks!

Credits

Scooby Doo Season 1 Intro: https://www.youtube.com/watch?v=chz8TnoznDc

Scooby Doo Season 1 Theme: https://www.youtube.com/watch?v=EWU9gbnupGc

MLP: FiM S4E3 "Castle Mane-ia" (c) Hasbro