Diethelm Waldseemüller is Raphael's Ace.


Diethelm is a tall black-haired man who appears in his mid-30s. He wears priest vestments and has a black beard.


Diethelm is shown to be a polite and gentlemanly person.



Red Dragon Emperor of the Blazing Truth × White Dragon Emperor of the Morning Star: The True Dragon(s) of the Kuoh AcademyEdit

Diethelm first appears in Volume 23, and took part of the meeting between Dulio's Team and Issei's Team for their upcoming match. He introduced himself to Issei and his team and greeted Asia Argento, who has Twilight Healing, which is similar to his own Sacred Gear.

Powers & AbilitiesEdit

Immense Strength: Diethelm has displayed immense strength, being able to hold his own against a Touki-enhanced Ouryuu.

Immense Stamina: Diethelm has massive amounts of stamina and endurance. He was durable enough being able to withstand multiple attacks from Ouryuu, including a direct punches from a Dragon's Pulse-enhanced Ouryuu without sustaining injuries and keep on fighting.

Light-Based Weapons: As a Reincarnated Angel, Diethelm can create light-based weapons such as a light sword, spear, or bow. Diethelm can create several spears of light simultaneously with ease.

Skilled Tactician: Diethelm has show has some skill in strategy, using long-range attacks as a response to Ouryuu covering himself in Touki, which increased his close combat potential.

Immense Speed: Diethelm possesses impressive speed, keeping up with Ouryuu even after he covered himself in Touki. 

Flight: Being an Angel, Diethelm can fly using his wings.


Holy Resuscitation: Diethelm possesses a Sacred Gear similar to Twilight Healing. Unlike the latter, however, it only works on those only related to Heaven.

  • Fourteen Holy Salvation: Diethelm’s Balance Breaker, which allows him to increase the area of his Sacred Gear's effects as well as the range of symptoms that it can cure. If the target was a believer, even a serious illness could be completely cured.




Community content is available under CC-BY-SA unless otherwise noted.