Maxwell's DemonWP (マックスウェルの悪魔, Makkusuweru no Akuma?), Class Name Caster (キャスター, Kyasutā?), is the Caster-class Servant of the Fuhrer in the Imperial Capital Holy Grail Strange Story of Fate/KOHA-ACE. He is the Servant of High Priest Makuzu in Fate/Grand Order.
Profile
Identity
Maxwell's Demon is a fictional demon created by James Clerk MaxwellWP as a thought experiment, distorted by the desires of people.
Appearance
Caster has short, well groomed orange hair, and is dressed in a Tan Business Suit with a Red Tie and Sunglasses.
Personality
Role
Fate/KOHA-ACE
Fate/Grand Order
GUDAGUDA Final Honnōji
Fate/type Redline
Day 3
Caster came to check on Assassin after his conversation his Master. Assassin thought Caster came to get his report from him, he reminds Caster about his Master's report on him, he did got the report. When Assassin thinks he refers to the magus he fought, but he wasn't talking her, he is talking Saber's Master. After Assassin informs him what he knows from the other day and asks why is he's interesting in him, he smile and asks Assassin he would be appreciate if he tells him more about him.
Abilities
Rather than being a magus, he is a scientist Heroic Spirit. Due to the nature of Maxwell's Demon not being resolved as of the 1940s, Caster is impossible to kill, except by attacks that kill even unkillable existences. He possesses no Class Skills or Stats in anything other than Noble Phantasm, and his only Skill is Devil's Proof, however no description of the skill is given. His Noble Phantasm is also called Maxwell's Demon.