!!Kucabara
Protagonst and third son of the great demon king. [[TheExile Banished]] from the Demon World, Kucabara decides to become a Defense Devil in order to make a living and to gather dark matter. Despite being a demon, he possesses a kind heart and is willing to use the dark matter he has collected from his clients to help them.


%%* AccidentalPervert
%%* BerserkerTears
%%* CoolSword
%%* CrouchingMoronHiddenBadass
%%* DarkIsNotEvil
%%* TheExile
* FireForgedFriends: With Idamaria [[spoiler: and Bichula.]]
* ILied
-->'''Kucabara''': It's because… I care about you.\\
'''Idamaria''': Wh-what do you mean… you care about me!?\\
'''Kucabara''': …I lied!
%%* ManlyTears
%%* NobleDemon
* NonhumanHumanoidHybrid: His [[spoiler:mother Kelia is an angel, albeit a fallen one.]]
* OverlyLongName: Mephisto Barto Dertor Reffert Lark Kucabara
%%* ThatCameOutWrong
* VitriolicBestBuds: With Bichula.

!!Bichula
Once a member of a famous dragon family. He is a small imp-like creature who was banished alongside Kucabara from the Demon World.

%%* BattleButler
%%* CrouchingMoronHiddenBadass
* FireForgedFriends: [[spoiler:With Kucabara.]]
%%* JerkWithAHeartOfGold
%%* LastOfHisKind
* NobleDemon: Complains about Kucabara's kind nature, but he's not any better.

!!Idamaria

%%* ActionGirl
%%* BadassAdorable
* BadassInDistress: [[spoiler:When Gigades kidnaps her.]]
* CatGirl: Dresses up as one when she and Kucabara infiltrates a village in the demon world.
%%* ChurchMilitant
%%* CryIntoChest
%%* DemonicPossession
* FireForgedFriends: With Kucabara.
%%* LuminescentBlush
%%* NaughtyNun: [[ReluctantFanserviceGirl Unwillingly.]]
%%* NunTooHoly
* SealedInsideAPersonShapedCan: [[spoiler:She has Goddess of Hell, Lillith within her.]]
%%* SuperPoweredEvilSide
%%* TsunDere

!!Samus

%%* [[spoiler: HeelFaceTurn]]
%%* OjouRinglets
%%* SlipknotPonytail
%%* SniperRifle
%%* TsunDere

!!Shugarl

%%* BadassBookworm
%%* BreakTheHaughty
* DefrostingIceQueen: After meeting Jupiter.
%%* MrFanservice
%%* GoodWithNumbers
%%* HeelFaceTurn
* HeroicSacrifice: [[spoiler:For Jupiter's parents.]]
%%* JerkWithAHeartOfGold
%%* {{Shinigami}}
* SlasherSmile: Shows a terrifying one when he [[spoiler:rescues Jupiter from a group of kidnappers.]]
%%* SmokingIsCool
%%* SupremeChef

!!Elimona
%%* [[spoiler: BigBad]]
* FaceOfAnAngelMindOfADemon: [[spoiler:Quite literally. Despite her beauty, Elimona is calculating, ruthless and cruel. Kucabara even makes the connection in-story.]]
%%* [[spoiler: FallenAngel]]
* ItsAllAboutMe: Elimona cares nothing for anyone else's needs or whims beyond her own.
%%* [[spoiler: [[ManipulativeBastard Manipulative Bitch]]]]
* MsFanservice: Easily the biggest eye-candy on the female side.
* OjouRinglets: How she wears her hair.
* TheTease: She absolutely loves flaunting her body.

!!Jupiter

%%* ChildrenAreInnocent
* CuteMute: After her parents' death. [[spoiler: She finally speaks again after Kucabara proves them innocent and brings them back from the demon world.]]
* HarmfulToMinors: Not only did she experience so much shock after her parents' death in an accident, but she also saw them writhing in pain in the demon world.
%%* {{Moe}}
* MoralityPet: To Shugarl.

!!Legato


%%* CreepyChild
* DiedInYourArmsTonight: [[spoiler:Subverted. While it looked like this, it's revealed later on that he barely avoided death.]]
%%* FacialMarkings
%%* LongHairedPrettyBoy
%%* [[spoiler: TakingTheBullet]]
* TearsOfBlood: Whenever he used his powers.
%%* WellIntentionedExtremist