|Affiliation||Demon Lord Faction|
|Anime||Season 2 Episode 3|
|Voice Actor||Ayumu Murase|
Luka is a supporter of Leohart. He fought alongside Leohart, using Heroic Spirits at the battle of between the two major factions of the demon realm at Rendval.
Luka is described as being an "adorable-looking young man"
As a researcher, Luka is passionate about science understanding ancient concepts and relics. His goal is to create modern versions of the ancient magic and relics of the past.
After being defeated by Mio, and passing on the opportunity to join the new demon council. Luka decides to return to the academy as a researcher. He dedicates himself to researching and upgrading Heroic Spirits in order to one day serve Leohart on the frontlines again.