Tzitzimitl (ツィツィミトル, Tsitsimitoru) is a recurring demon in the series.
In Aztec mythology, a tzitzimitl is a deity associated with stars. They were depicted as skeletal female figures wearing skirts often with skull and crossbone designs.
The Tzitzimimeh were associated with the stars and especially the stars that can be seen around the sun during a solar eclipse. This was interpreted as the Tzitzimimeh attacking the sun. The Tzitzimimeh had a double role in Aztec religion: they were protectresses of the feminine and progenitresses of mankind. But they were also powerful and dangerous, especially in periods of cosmic instability.
Tzitzimitl is a Persona of the Priestess Arcana. She is reputed as a goddess of the Aztec civilization that inhabited modern-day Mexico and is thus one of the few Personas in the game of North or Central American origin (the others being Slime, Hell Biker, and Mothman).
"Aztec goddesses of night and fear. They constantly attack the sun and cause solar eclipses. They demand a sacrifice once every 52 years."