Alicia Crystella

Alicia Crystella is a character from How NOT to Summon a Demon Lord (Isekai Maou to Shoukan Shoujo no Dorei Majutsu).

She is an Imperial Knight from a noble ducal family. On the surface, she appears as a kind, polite, gentle, and justice-driven woman who acts friendly and upholds moral values to protect the kingdom and its people. She has a tall, slender build with long red hair and wears glasses.

However, she harbors a darker side as a secret worshiper of a certain Demon Lord (involving twisted ideals about "improving" the world), which leads to significant plot developments and a notable betrayal/revelation arc in the story (particularly around events in season 1). She eventually becomes part of the main group's dynamics in the typical harem/isekai companion style.