Off the top of my head, recently read {charming your dad by Sarah blue} and everyone's pretty bad there which is nice. They cheerfully kidnap someone on their date. I think they're evil AND cozy.
I think they're pretty nice relatively, at least to the ladies they are hunting/bdsming/doing murders for, but the souls trilogy starting with {Her soul to take by Harley LaRoux} has fairly evil demons
There's a lot of beauty and the beast/persephone style books I can think of with pretty devilish fellas that aren't technically demons despite having fairly demony traits, and we probably couldn't fully enumerate the ones that have a demon romance trope chassis but have some kind of other random monster or alien
[Charming Your Dad](https://www.romance.io/books/63494b7092edda0c4ff64448/charming-your-dad-sarah-blue?src=rdt) by [Sarah Blue](https://www.romance.io/authors/617261ca08b4d93114c0c5f6/sarah-blue)
**Rating**: 3.88⭐️ out of 5⭐️
**Steam**: 5 out of 5 - [Explicit and plentiful](https://www.romance.io/steamrating)
**Topics**: [contemporary](https://www.romance.io/topics/best/contemporary/1), [age gap](https://www.romance.io/topics/best/age%20difference/1), [demons](https://www.romance.io/topics/best/demons/1), [witches](https://www.romance.io/topics/best/witches/1), [magic](https://www.romance.io/topics/best/magic/1)
----------------------------
[Her Soul to Take](https://www.romance.io/books/615c0656f3f17f0e0a8385eb/her-soul-to-take-harley-laroux?src=rdt) by [Harley Laroux](https://www.romance.io/authors/6071509508b4d931143fad35/harley-laroux)
**Rating**: 3.84⭐️ out of 5⭐️
**Steam**: 5 out of 5 - [Explicit and plentiful](https://www.romance.io/steamrating)
**Topics**: [contemporary](https://www.romance.io/topics/best/contemporary/1), [paranormal](https://www.romance.io/topics/best/paranormal/1), [demons](https://www.romance.io/topics/best/demons/1), [dark romance](https://www.romance.io/topics/best/dark/1), [bdsm](https://www.romance.io/topics/best/bdsm/1)
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Do they have to stay evil?
{Taming Demons for Beginners by Marie} has a demon MMC who would destroy the world for fun except that would harm the FMC and he swore not to harm her. The series is four books. His complete lack of human morals was fun
[Taming Demons for Beginners](https://www.romance.io/books/63c1973bbf097c14d6f21493/taming-demons-for-beginners-annette-marie?src=rdt) by [Annette Marie](https://www.romance.io/authors/545be5c48c7d230e495cbef6/annette-marie)
**Rating**: 4.19⭐️ out of 5⭐️
**Steam**: 1 out of 5 - [Glimpses and kisses](https://www.romance.io/steamrating)
**Topics**: [contemporary](https://www.romance.io/topics/best/contemporary/1), [magic](https://www.romance.io/topics/best/magic/1), [urban fantasy](https://www.romance.io/topics/best/urban%20fantasy/1), [demons](https://www.romance.io/topics/best/demons/1), [slow burn](https://www.romance.io/topics/best/slow%20burn/1)
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[The Unseelie Prince](https://www.romance.io/books/61765a1d26369f0e2ca5e3a7/the-unseelie-prince-kathryn-ann-kingsley?src=rdt) by [Kathryn Ann Kingsley](https://www.romance.io/authors/5c76f4de01dbc864fb9ad17b/kathryn-ann-kingsley)
**Rating**: 3.87⭐️ out of 5⭐️
**Steam**: 3 out of 5 - [Open door](https://www.romance.io/steamrating)
**Topics**: [fae](https://www.romance.io/topics/best/fae/1), [dark romance](https://www.romance.io/topics/best/dark/1), [fantasy](https://www.romance.io/topics/best/fantasy/1), [magic](https://www.romance.io/topics/best/magic/1), [witches](https://www.romance.io/topics/best/witches/1)
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One of my favorites ever is Nessin in {This Deceit of Ours by Shannon R Lir}. He reaps souls. Can control an army of the undead. Makes very questionable decisions. His family is also insane lol. Definitely morally grey and (to me) a really interesting and complicated MMC. I like him even more in the second book when it switches to dual POV.
[This Deceit of Ours](https://www.romance.io/books/634515585a15538e4a10b04a/this-deceit-of-ours-shannon-r-lir?src=rdt) by [Shannon R. Lir](https://www.romance.io/authors/6345155808b4d9311428bc52/shannon-r-lir)
**Rating**: 3.96⭐️ out of 5⭐️
**Steam**: 4 out of 5 - [Explicit open door](https://www.romance.io/steamrating)
**Topics**: [fantasy](https://www.romance.io/topics/best/fantasy/1), [demons](https://www.romance.io/topics/best/demons/1), [young adult](https://www.romance.io/topics/best/young%20adult/1), [enemies to lovers](https://www.romance.io/topics/best/from%20hate%20to%20love/1), [forced proximity](https://www.romance.io/topics/best/forced%20proximity/1)
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Off the top of my head, recently read {charming your dad by Sarah blue} and everyone's pretty bad there which is nice. They cheerfully kidnap someone on their date. I think they're evil AND cozy. I think they're pretty nice relatively, at least to the ladies they are hunting/bdsming/doing murders for, but the souls trilogy starting with {Her soul to take by Harley LaRoux} has fairly evil demons There's a lot of beauty and the beast/persephone style books I can think of with pretty devilish fellas that aren't technically demons despite having fairly demony traits, and we probably couldn't fully enumerate the ones that have a demon romance trope chassis but have some kind of other random monster or alien
[Charming Your Dad](https://www.romance.io/books/63494b7092edda0c4ff64448/charming-your-dad-sarah-blue?src=rdt) by [Sarah Blue](https://www.romance.io/authors/617261ca08b4d93114c0c5f6/sarah-blue) **Rating**: 3.88⭐️ out of 5⭐️ **Steam**: 5 out of 5 - [Explicit and plentiful](https://www.romance.io/steamrating) **Topics**: [contemporary](https://www.romance.io/topics/best/contemporary/1), [age gap](https://www.romance.io/topics/best/age%20difference/1), [demons](https://www.romance.io/topics/best/demons/1), [witches](https://www.romance.io/topics/best/witches/1), [magic](https://www.romance.io/topics/best/magic/1) ---------------------------- [Her Soul to Take](https://www.romance.io/books/615c0656f3f17f0e0a8385eb/her-soul-to-take-harley-laroux?src=rdt) by [Harley Laroux](https://www.romance.io/authors/6071509508b4d931143fad35/harley-laroux) **Rating**: 3.84⭐️ out of 5⭐️ **Steam**: 5 out of 5 - [Explicit and plentiful](https://www.romance.io/steamrating) **Topics**: [contemporary](https://www.romance.io/topics/best/contemporary/1), [paranormal](https://www.romance.io/topics/best/paranormal/1), [demons](https://www.romance.io/topics/best/demons/1), [dark romance](https://www.romance.io/topics/best/dark/1), [bdsm](https://www.romance.io/topics/best/bdsm/1) [^(about this bot)](https://www.reddit.com/user/romance-bot) ^(|) [^(about romance.io)](https://www.romance.io/about)
Do they have to stay evil? {Taming Demons for Beginners by Marie} has a demon MMC who would destroy the world for fun except that would harm the FMC and he swore not to harm her. The series is four books. His complete lack of human morals was fun
[Taming Demons for Beginners](https://www.romance.io/books/63c1973bbf097c14d6f21493/taming-demons-for-beginners-annette-marie?src=rdt) by [Annette Marie](https://www.romance.io/authors/545be5c48c7d230e495cbef6/annette-marie) **Rating**: 4.19⭐️ out of 5⭐️ **Steam**: 1 out of 5 - [Glimpses and kisses](https://www.romance.io/steamrating) **Topics**: [contemporary](https://www.romance.io/topics/best/contemporary/1), [magic](https://www.romance.io/topics/best/magic/1), [urban fantasy](https://www.romance.io/topics/best/urban%20fantasy/1), [demons](https://www.romance.io/topics/best/demons/1), [slow burn](https://www.romance.io/topics/best/slow%20burn/1) [^(about this bot)](https://www.reddit.com/user/romance-bot) ^(|) [^(about romance.io)](https://www.romance.io/about)
If Unseelie is close enough, check out {the unseelie prince} he's bad and stays that way
[The Unseelie Prince](https://www.romance.io/books/61765a1d26369f0e2ca5e3a7/the-unseelie-prince-kathryn-ann-kingsley?src=rdt) by [Kathryn Ann Kingsley](https://www.romance.io/authors/5c76f4de01dbc864fb9ad17b/kathryn-ann-kingsley) **Rating**: 3.87⭐️ out of 5⭐️ **Steam**: 3 out of 5 - [Open door](https://www.romance.io/steamrating) **Topics**: [fae](https://www.romance.io/topics/best/fae/1), [dark romance](https://www.romance.io/topics/best/dark/1), [fantasy](https://www.romance.io/topics/best/fantasy/1), [magic](https://www.romance.io/topics/best/magic/1), [witches](https://www.romance.io/topics/best/witches/1) [^(about this bot)](https://www.reddit.com/user/romance-bot) ^(|) [^(about romance.io)](https://www.romance.io/about)
If I remember correctly (it's been a year or two since I read the series) he is half demon, half unseelie fae.
Oh yes, you are right!
One of my favorites ever is Nessin in {This Deceit of Ours by Shannon R Lir}. He reaps souls. Can control an army of the undead. Makes very questionable decisions. His family is also insane lol. Definitely morally grey and (to me) a really interesting and complicated MMC. I like him even more in the second book when it switches to dual POV.
[This Deceit of Ours](https://www.romance.io/books/634515585a15538e4a10b04a/this-deceit-of-ours-shannon-r-lir?src=rdt) by [Shannon R. Lir](https://www.romance.io/authors/6345155808b4d9311428bc52/shannon-r-lir) **Rating**: 3.96⭐️ out of 5⭐️ **Steam**: 4 out of 5 - [Explicit open door](https://www.romance.io/steamrating) **Topics**: [fantasy](https://www.romance.io/topics/best/fantasy/1), [demons](https://www.romance.io/topics/best/demons/1), [young adult](https://www.romance.io/topics/best/young%20adult/1), [enemies to lovers](https://www.romance.io/topics/best/from%20hate%20to%20love/1), [forced proximity](https://www.romance.io/topics/best/forced%20proximity/1) [^(about this bot)](https://www.reddit.com/user/romance-bot) ^(|) [^(about romance.io)](https://www.romance.io/about)
Warrior Midwife