If the show added OCs/Fanmade Characters...

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I believe the show has had two OCs in the show for the Make-A-Wish foundation.
 
Angel Wings from Top Bolt.  

 
Stellar Eclipse from Trade Ya.  

What about a Crossover Episode with many other fanbases?

How about some that aren’t pegasi? Seriously, every canon self-insert is a pegasus. All of them. Find me one that isn’t.
 
Or some Fo:E references as a fandom nod like Slice of Life was? You don’t even have to show anything. Or was The Cutie Remark a reference? Do people only care about the original and Project Horizons? Rule of first popularity, I guess…

The Cutie Re-Mark is an obvious unintended reference to Fo:E

@RhodieNite  
>>1032552