(4) He eventually gets his comeuppance when Hiei secures a special demon-plant from Kurama and uses it on him, trapping him in an immobile state where any wounds he gets will immediately be healed, and then presents him to Mukuro for her to torture as she wants, along with the revelation of the fake implanted memory.
(5) She was so controlling and possessive of Nagisa that she wanted him to follow her expectations for him to the letter, including the opportunities she herself never got to have. She practically said that as the one who gave birth to him, she OWNED him.
(4) It says something that Shishio, a murderous warlord who psychologically manipulated Soujiro, was still a BETTER parental figure than Soujiro's actual relatives.
(4) To the Kazekage's credit, when he was later revived with the Edo Tensei technique and Gaara called him out on all the cruel actions he committed in the past, he admitted that he'd done wrong by Gaara and that Gaara turned out far better than him in spite of it all, as well as revealing that Gaara's mother and Yashamaru had truly loved him all a
(3) In the anime-only Virtual World arc, it turns out he wasn't much better to his own biological son Noah, as during the arc he manipulated Noah into committing the arc's atrocities to get back at Seto for taking Kaiba Corporation from him in the past.
(4) Even before he sold Guts to the pedophile soldier, Gambino was verbally abusing him on a daily basis, as well as putting him on the battlefield while he was still a child.
(8) The abuse wasn't only limited to Sanji, either; it turns out that Judge had genetically experimented on all four of his sons while they were in the womb, to remove their empathy and turn them into perfect weapons. It only failed with Sanji because his mother took a drug that reversed the effects on him, at the cost of her own health and life.