Admittedly, his page could use more updates, but he’s kinda too perfect to pass up for NWH.
Kamen Rider Eternal would work really well for the theme of curing villains in NWH rather than having them meet an end
To give some background, Daido was killed in a car accident as a kid, but his mother (Miki) brought him back by turning him into a Necro-Over, pretty much bringing him back as an undead being. Even disregarding transformations, Necro-Overs are incredibly durable as well as tend to face the loss of their memories as living beings, growing personality changes and a lack of empathy over time. Necro-Overs also need to take injections as to ensure they kept their immortality instead of fade away, but Daido remedied this for himself
He began leading a Mercenary Team of others like himself called NEVER which took out groups such as terrorists, but after a certain mission drove him insane, he pretty much became evil and aimed to destroy an entire city whilst turning its civilians into Necro-Overs, wishing for a form of companionship behind his cold exterior
Essentially, Daido lost himself once becoming undead, so I think it’s not out of the realm of believability that Peter would want to help him recover his pre-death mental state/gentle personality
Sorry that got lengthy, I kinda wanted to give context as to why I thought he’s a strong candidate. I believe this is okay for 2 submissions per verse since I had Psyga?