Here is a Servant Profile and voice lines for John Taylor from Nightside, based on the information I found from the web search results1234:
Servant Profile
Class: Ruler
True Name: John Taylor
Gender: Male Source: Nightside series by Simon R. Green
Region: England
Alignment: Chaotic Good
Height: 183 cm
Weight: 75 kg
Strength: C
Endurance: C
Agility: B
Mana: A
Luck: EX
NP: A+
Traits: Male, Humanoid, Servant, Weak to Enuma Elish
Class Skills: Magic Resistance: B Grants protection against magical effects. Differing from the Resistance effect that merely rejects Magical Energy, this ability cancels the spells altogether. John Taylor has a high resistance to magic due to his innate ability to disrupt and dismantle magical forces and wards.
True Name Discernment: A Status information such as one’s identity, Skills and Parameters are automatically revealed to the owner of this Skill when directly encountering a Servant. In cases where the True Name is not revealed, status information will only be partially displayed. John Taylor can use his “private eye” to find out anything about anyone, even if they do not want to be seen.
Personal Skills:
Private Eye: EX A unique ability that allows John Taylor to locate anything or anyone that is lost or hidden, even across dimensions and realities. This Skill also grants him several secondary abilities, such as telekinesis, reality manipulation, and magical disruption. However, using this Skill too frequently or intensely can cause physical and mental strain, as well as attracting unwanted attention from his enemies.
Nightside’s Child: A+ A Skill that denotes John Taylor’s origin and affinity with the Nightside, a dark and hidden netherworld of London where the supernatural and science fiction co-exist. This Skill grants him access to the Nightside’s resources and allies, as well as enhancing his combat abilities and survivability in dark and dangerous environments.
Lilith’s Son: B A Skill that denotes John Taylor’s heritage and connection to Lilith, the primordial mother of monsters and the creator of the Nightside. This Skill grants him a high resistance to mental interference and curses, as well as a charisma that can influence both humans and non-humans. However, this Skill also makes him a target for many powerful forces that either hate or fear Lilith.
Noble Phantasm: The Heart of Merlin Satanspawn: The Ultimate Weapon of the Nightside
Rank: A+
Type: Anti-Unit
Range: 1~99
Maximum Targets: 1 person
A crystallized mystery that John Taylor obtained by traveling back in time and stealing the heart of Merlin Satanspawn, the greatest sorcerer of the Nightside and the son of Satan himself. The heart contains all of Merlin’s power and knowledge, as well as his madness and malice. By activating this Noble Phantasm, John Taylor can unleash a devastating blast of pure magic that can destroy almost anything in its path. However, using this Noble Phantasm also exposes John Taylor to Merlin’s influence, which can corrupt his mind and soul.
Voice Lines:
Summoning: “Hello there. I’m John Taylor, a private investigator from the Nightside. I can find anything you want, for a price. Just don’t ask me to use this thing in my chest. It’s more trouble than it’s worth.”
Level Up: “Thanks for the boost. I feel stronger already.”
Ascension 1: “Nice outfit. It reminds me of my old days in the Nightside.”
Ascension 2: “I’m getting used to this place. It’s not so bad, compared to where I come from.”
Ascension 3: “Wow, you really trust me with this much power? You’re either very brave or very foolish.”
Ascension 4: “I’ve reached my peak. I can feel it. There’s nothing I can’t find now. Well, almost nothing.”
Bond Level 1: “So you’re my Master, huh? Well, don’t expect me to follow your every order. I have my own way of doing things.”
Bond Level 2: “You’re not bad at this. You have a good sense of direction and timing. And you don’t get in my way too much.”
Bond Level 3: “You know, you remind me of someone I used to know. Someone who was kind and brave and stubborn. Someone who believed in me.”
Bond Level 4: “I like you, Master. You’re a good person. You care about others more than yourself. You’re not like most people in this world.”
Bond Level 5: “I trust you, Master. You’re more than just a contract to me. You’re a friend. And maybe something more.”
Dialogue 1: “Let’s go find some trouble. Or maybe trouble will find us. Either way, it’ll be fun.”
Dialogue 2: “I don’t like using my gift too much. It hurts my head and my heart. And it attracts the wrong kind of attention.”
Dialogue 3: “Don’t touch the heart in my chest. It’s not mine. It belongs to someone else. Someone very dangerous.”
Dialogue 4 (if you have Merlin): “Merlin, huh? I’ve met him once. Well, not him exactly, but his son. He was a real piece of work. I wonder how much they have in common.” (Love)
Dialogue 5 (if you have Lilith): “Mother. I never thought I’d see you again. Not after what you did to me. To the Nightside. To the world. What do you want from me now?” (Hate)
Dialogue 6 (if you have any Servant from the Nightside series): “Hey, you’re from the Nightside too? Small world. Or maybe not. The Nightside has a way of reaching out to other places. And other times.” (Respect)
Dialogue 7 (if you have any Servant related to King Arthur): “King Arthur and his knights. I’ve heard of them. Legends and myths of a better time. A time that never was. Do you really think they can save this world?” (Doubt)
Likes: “I like finding things. It’s what I do best. It’s what I was born to do. It gives me a sense of purpose and satisfaction.”
Dislikes: “I don’t like being manipulated. By anyone. Especially by my mother. She thinks she knows what’s best for me. For everyone. She’s wrong.”
Holy Grail: “The Holy Grail, huh? I’ve seen it once. In the Nightside. It was a fake, of course. A trap for the unwary and the greedy. But maybe there’s a real one out there. Maybe you can find it. With my help, of course.”
Event: “Something’s happening. Something big. Something exciting. Something dangerous. Let’s go check it out.”
Birthday: “Happy birthday, Master. You’ve survived another year in this crazy world. That’s something to celebrate.”