Life in Equestria continued peacefully after the defeat of the Legion of Doom.
What of the ponies and other creatures?
Main series: The Markless Wonderer: Origin
Fellow Side Stories: Baltimare's Haunted House of "Apparitions" | What's Best for Tempest
A collection of SOL stories throughout (future) Equestria. There isn't a main character, though some might appear more than others. Who knows?
If you're curious about existing character tags: Luna, Celestia, Flurry Heart, Cozy Glow, Luster Dawn, Dr. Whooves, March Gustysnows, Sweetie Belle, Button Mash, Bill Neigh, Gizmo Poindexter, Glitter Drops, Rarity, Featherweight (Will update over time)