|Faction||The Irish Sanctuary (formerly)|
Nye is a sadistic surgeon, classified only as it, its species is called Crenga, and it takes great pleasure in chopping up dead bodies brought to it by the Dullahan. It was once hired by the Irish Sanctuary before Skulduggery Pleasant arrested it after the War of the Sanctuaries. It was broken out of Ironpoint Gaol by Eliza Scorn and has since then been working for Serafina, continuing its obsessive search of the soul.
Dr Nye was a Mevolent supporter and 'looked after' prisoners. It tortured them and cut them up in the name of science. It was a legend among both those who sided with Mevolent and those who sided with the Sanctuary. Skulduggery Pleasant told Valkyrie Cain that everyone had heard of the "evil doctor", or words to that effect.
Sealing Valkyrie's True Name
Nye makes its first appearance in Mortal Coil, where it performs open-heart surgery on Valkyrie to seal her True Name. Whilst Nye is carving the requisite symbols on her heart, the Dullahan has to leave and Nye takes the opportunity to keep Valkyrie and cut her up to 'find her soul'. Valkyrie, however, tries to escape and when Nye catches her she threatens it with Necromancy, which has been made much more powerful due to the fact that she is dead. Nye then sews Valkyrie back up and lets her go. Skulduggery determines that Nye was the one who performed the operation through the way Valkyrie refers to Nye without using gendered pronouns.
Skulduggery has apparently heard of it before and berates Valkyrie for going to it, as it is known for 'not following the rules'.
Working in the Sanctuary
Later on, Nye is approached by Clarabelle, Vaurien Scapegrace and Thrasher. Clarabelle asks to be Nye's assistant. After finding out that Clarabelle killed Grouse, it hires Clarabelle. Scapegrace asks if Nye could return him from being a zombie to a human. It doesn't see how it can benefit from this and rejects the offer.
In Kingdom of the Wicked Nye is approached by the Remnant posessed Tanith Low and her boyfriend Billy-Ray Sanguine. She gets Doctor Nye to reperform the operation on Sanguine by ripping him open and sewing him back again to fix his powers. It is once again approached by the zombie Vaurien Scapegrace (who is now a head in a jar) and Thrasher. They make a deal, Nye is to perform a brain transplant on them, and Scapegrace will give it the remains of The White Cleaver. It also theorizes that the Sceptre of the Ancients in an alternate reality will not belong to Mevolent anymore but will instead be usable by the first person to give it a 'charge' of energy.
Nye still worships the Faceless ones and this is shown when Mevolent is going through the process of being killed by Redhoods, as Mevolent intends to show that he is death's master. Nye then takes Mevolent in a liquid pool where he recovers from his wounds.
When the dimension is re-visited it runs experiments on Valkyrie.
War of the Sanctuaries
Nye believes itself to have been granted amnesty from The War when Ghastly Bespoke tries to offer it Cleaver protection. Ghastly says it is to protect it from the families of the people it tortured. It is later sent to the Keep. After the battle is over, Skulduggery arrests it for siding with the Roarhaven mages.
It is mentioned to be broken out of Ironpoint Gaol by Eliza Scorn.
Skulduggery Pleasant and Valkyrie Cain find Doctor Nye working in a lab in the Alps when they're looking for Abyssinia. It has continued its work on 'excavating the soul' and now believe it has found it. Valkyrie notes that Nye is starting to look old, and is both paler and smaller then it was the last time she saw it, Doctor Nye itself tells them it only has a few years left to live. It also claims it is no longer experimenting on any patients and that it has no idea who its employer is. Nye reveals that Abyssinia came by two days prior, looking for her son, Caisson, who had been held in the facility and experimented upon for the last 60 years. Caisson and the man experimenting on him, Doctor Quidnunc, had been removed only a week earlier. When Skulduggery and Valkyrie try to arrest Doctor Nye, they are attacked by a necromancer named Whisper. She shadow-walked away with Skulduggery, and during the time it takes him to get back, Valkyrie makes a deal with Nye, allowing him to walk away in exchange for information that can help them track down Doctor Quidnunc. Whisper shadow-walks them out of there just as Skulduggery re-enters the room.
Nye is a skilled surgeon, apparently second only to Kenspeckle Grouse which is why it was hired after Grouse's death. It also has a grasp of other science as it mentions that it 'knows something' about transdimensional physics.
Nye has a rather gruesome appearance, having previously had its eyes and mouth sewn shut and reopened again, leaving behind some loose threads. It has abnormally long limbs and a bloody scab instead of a nose. When Valkyrie first sees Nye she is incapable of determining its gender from its appearance or voice, which is high and shrill.
In Midnight, Temper Fray describes it as 'tall, green and ugly', and Valkyrie answers that it is 'not so tall or so green any more', referring to the fact that Crenga shrinks and pales as they get older and that Doctor Nye is now very old.