Assuming this is an alternate universe and not linked story-wise to canon…
Chronicle: Close friend of Twilight Sparkle and self-appointed bodyguard with ninja skills. He also constantly tries to get himself to ask Fluttershy out on a date.
Graphite: Member in the Engineering club.
Mjolna and Tasty Snack: Twins. One a member of the Engineering club, and the other of the Cooking club.
Mystic Shield: Leader of the Aikido club. Helps set it up thanks to Chronicle.
Greatstone, Bullseye, Tricky Books, Chrono Cards: Top four students in the Aikido club.
(YTA) Skyla: Member of the Wonderbolts. Keeps an eye on Rainbow Dash.
(YTA) Moonbow Peek: Resident fortuneteller in town. Not at all creepy, but quite mysterious in her fortunes.
YTA: Yet To Appear as of this post.