Somnambula

Somnambula (/sɒmˈnæmbjuːlə/, sahm-NAM-byoo-luh) is a female Pegasus and figure of Equestrian legend first mentioned in season six's The Crystalling - Part 2. She makes her first physical appearance in Daring Done?, and she also appears in the IDW comics' My Little Pony: Legends of Magic Issue #5 and in the season seven finale Shadow Play.