Man, I wish Beyond the Barrier would update. It was the only Undertale & MLP fic that got me interested aside from Starlight & Sans.
If I ever had the motivation to write fanfics on paper or computer instead of only in my head, I would make my own attempt at an Undertale & MLP fic. (Which is just one of my many stupid MLP & video game crossover fic ideas.)
Mine would be like Beyond The Barrier’s except it takes place past The Cutie Re-Mark and Friendship Games.