Original Description:
I had this idea for an Equestria Girls fanfiction where Grogar convinces Flash Sentry to join his side by telling him that Twilight Sparkle doesn’t care about him anymore. Grogar also transforms into a demon and turns Flash Sentry into a demon as well before he starts to wreak havoc at the human world. Only Twilight and her friends could stop Grogar and reason with Flash Sentry that she still has feelings for him.