Here's another crossover request, this time from "Unikitty-Loves-Mint" of DeviantArt.
It's Henry, Charles, and Ellie from The Henry Stickmin Collection meeting the Flutter Ponies from the G1 version of My Little Pony.
I admit I've never seen Henry Stickmin, and I haven't seen much of the G1 MLP. (Most of what I did see was the FiM version.) So I had to do an image search for both series.
Hope I got all the characters right.

DISCLIMER:

I only own the fanart, not the characters.