Even Evil Has Loved Ones is a trope, much like Even Evil Has Standards, that is meant to show a villain isn't completely evil. Sometimes, this can appear as a villain having a parent, lover, child or friend they care about very much. Sometimes, if their love is strong enough, it will redeem the villain, but in other cases, their death may eliminate their belief in good and put them on the path of evil, in what is called the Despair Event Horizon. Note that this can only count if the villain is truly loving; in the case of a lover, if the villain simply has a crush that's not returned, it doesn't count.
Examples[]
Scott:
Nightmare Rarity:
Spikezilla:
Deathstroke: Despite being the 2nd in command of the Legion of Past Present and Future Evil and being pretty bad. His actions are only because he wants the love of his life back and to get his eye back. He also is friends with many of his team mates and made a deal with Thawne so his friends could get what they want out of the Spear and this was a main reason he turned on Thawne.
Ainz Ooal Gown:
Black ShadowxMiss Killer: In Ikran's timeline, ever since he conjured Miss Killer, he seems to admire her over his other henchmen. So much so that his robotic copy even protected her from a fatal meteor shower after Zoda decided to exact revenge on them. He also admires her on account on how skilled she is as a racer, how devoted and loyal she is to him and Dark Million, and in some cases being a lover to the villain. Their dark chemistry seems to connect, as one of Ikran's guilty couples. It can also be subverted since Rick Wheeler was reunited with his old flame within the darkness as he succumbed to Dark Million's thrall, only for a little while.
Dragon Rose: She seems to have multiple couples; first with Domin, then Dameon, and lastly Cecil. She was a rebel of her people, the Injukhal, and a proud daughter to Chief Abdullah, but she always had some ulterior motives. She was first infatuated with Domin, wanting to rule the tribe for themselves and have Dragon Rose as his mate. Then, there was the Dark Knight, Dameon, who had his dark influence separated from Cecil as he became a Paladin, then wound up lost in Tenebre; she took him in and sympathized with him, and wanting revenge, she empowered him to do as such while he became a promising warrior serving her and Domin's cause. Finally, there was Cecil; he grew enthralled with the Injukhal, as well as their enticing drums and Dragon Rose herself. He was willing to serve under her and he had that urge a few times, but it never came to pass. It was actually subverted during the Tribal Ceremony, as Cecil was seen he was loyal to the mistress as Domin, also a participant, kept encouraging them.
The Prankster, Lorenzo Suave and Titan are all legitimately friends and care about one another and their concerns. Lorenzo Suave is both Prankster's right hand man and father figure as well so they have a father and daughter bond not unlike Bender and Luan Loud. Lorenzo and Titan refuse to give up Prankster to Putty and help her put him away.
Bash and Bella are basically burglars who are also a couple and married by the end of The Prankster Point Paradox. They truly love one another despite their profession.
Nolan/Omni Man for all of his bluster really does care about his son and considers Ford still his friend despite their differences stances on Lydia and her heroine alias. Nolan refuses to kill Ford as well and allows Ford to reach through to him. Proving unlike Bill Cipher, Nolan really was a friend to Ford.