Nathan Tanner is a main character in Fan:Digimon Tamers: V2.
Nathan is cruel and a huge jerk to James.
Digimon Tamers: V2
Nathan is a villian in Fan: Digimon Tamers: V2. He first appears in a flash back of James when he bullies him for liking digimon (though we later learn he is actually a tamer).
He appears a few times afterwards and starts to suspect that something is off about James.
When he learns that James is a tamer he is furious that he had not figured it out sooner.
We later discover he is partner to NeoDevimon and is a cultist member who actually enjoys being a part of it.