MSE-1T is one of two MSE-series droids, specifically of a specified type, that resided within the Tomorrowland Starport of Star Tours. These two droids traveled along a designated path and were rumored to ingest discarded metal components. The other droid was once in a state of disrepair.
Hasbro launched an exclusive MSE-1T action figure in 2005 as part of the Star Tours line. This droid, along with its partner, can be observed in the Star Tours attractions located at both Disney's Hollywood Studios and Tokyo Disneyland.
As indicated by both the Spot the Droid poster and the Complete Guide to Star Tours booklet for the Tokyo location, their habitat was the Droidnostics Center. A map of the ride highlighted the rarity of passengers actually spotting one of them.