Here's an MLP and Undertale crossover comic dub.

Comic by AniRichie Art
http://agent0fluffy.deviantart.com/art/COM-Flower-Power-COMIC-613654521

Agent0Fluffy as Twilight Sparkle, Applebloom, Sweetie Belle, Scootaloo, Narrator and Flowey
Music belongs to AudioBlocks, Toby Fox, and Audio Lounge

Music:
Tickle the Orchestra
Drama tension strings
Unnessisary Tension
Happy children song