Fringe

Fringe is a science-fiction series that Andy Price really likes, and like anything Price likes, it has found itself featured in My Little Pony more times then you'd expect. The primary connection between the two series is through The Observer, also known as September, a recurring character in the My Little Pony: Friendship is Magic comic series by IDW Publishing who typically appears in background shots but has spoken dialogue in "Reflections", which ties into the other major Fringe reference as many characters from the show appear within the storyline. Additionally, The Observers, a group in Fringe, has been referenced in the comic story, "The Fall of Sunset Shimmer".

Characters
The following Fringe characters appear in My Little Pony.
 * Walter Bishop
 * Olivia Dunham (
 * The Observer

Other connections

 * played William Bell on Fringe. While Nimoy never appeared in My Little Pony, Spock has.