Lucifer Shinsei Daten no Ou is a central character in the Monster Strike anime and game franchise. Known as the Holy Fallen King, Lucifer is portrayed as a powerful and enigmatic figure who once led a rebellion in Heaven. She possesses immense strength and a commanding presence, often taking on the role of a leader and protector. In the series, Lucifer’s journey is marked by battles against formidable foes, complex alliances, and her pursuit of redemption, making her one of the most iconic and beloved characters in Monster Strike.