Sir. Lancelot

Sir. Lancelot is the father of Alice and Nova as well as the husband of Elaine.

Lancelot is also the current Demon King, leader of all the Demon. In Japan, he is a famous politician whose known as a prominent philanthropist and at Raizen High School, he is a school doctor, using a different appearance.

Personality
Lancelot is one of the most powerful creatures in the demon world, viewed by fellow demons as a “God”. He holds an enormous amount of magical power and knowledge, and he never stops pursuing more.

As the king of the Underworld, Lancelot was benevolent to his people and treated them fairly. When he was not busy with policies, however, Lancelot cared deeply for his family, having fun with them as he wanted to be the best father he could. However, it is revealed that he would always be happy to see his children after a long day. Lancelot also has a different view in warfare; Elaine told Alice that Lancelot told her that there is no point in killing soldiers who have surrendered and disliked killing the enemy without letting them have a chance to surrender.

Elaine explains to Alice that Lancelot was a bit of a troublemaker in his youth, he loved to play tricks on the servants (and in the Japanese version, he hung around the capital's red-light district at times), but mellowed out as he grew older.

Abilities
Lancelot possesses all the racial abilities of a pure born Demon. He also possesses the highest level of magic in the Demon World. His power is considered by his race and his children as “God-like”.

The only way to kill him is through cutting his head off or stabbing his heart.