EM Celestria was an Event Moderator for the Chesapeake shard in the first iteration of the Event Moderator program.

Celestria had an in-character persona named Myrina Heron that was the Captain of the Royal Britannian Guard.

Celestria ran several exciting events on Chesapeake including the Solen Attack on Moonglow, the appearance of mysterious monoliths, the battle and defeat of Blackthorn, Lord British's departure from Sosaria, the Puzzle Trail around the realm and many Gates of the Day to name a few. She was last seen in July 2005 and was succeeded by EM Nina.