Serenity

Serenity has several meanings in the DWU:
 * Serenity (Cold Fusion), a Trakenite colony that survived the destruction of Traken (PROSE: Cold Fusion)
 * Serenity (Legacy of the Daleks), a cat owned by Becca who gave birth to a tabby that ultimately travelled with the Eighth Doctor for a while (PROSE: Legacy of the Daleks)
 * Serenity (The Ultimate Treasure), a pleasure planet mentioned in PROSE: The Ultimate Treasure