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Ivan has long, straight, light-coloured hair that falls past his mid-back. Much of the top of his head is covered by bandages, presumably a result of the surgery Fyodor performed on him.
He wears a white sleeved shirt and black tie under a dark-coloured vest. Below, he wears black trousers and plain shoes.
Having had his "unhappiness removed", Ivan is seen constantly smiling, either on the brink of bliss or completely mad with joy. As a result of the surgery, he has the utmost reverence towards Fyodor, and does whatever his "master" says.
In battle, Ivan's joy never ceases, and he handles Atsushi and Akutagawa with great ease, never losing his composure even in the face of defeat, having great faith and confidence in Fyodor's scheme.
Like Fyodor, he enjoys classical music.
The Precipice lets Ivan manipulate rock into golem-like arms, or using it as floating, omni-directional defence and offence. His connection to earth allows him constant awareness of his surroundings. The rock is incredibly sturdy, withstanding repeated attacks from both Beast Beneath the Moonlight and Rashomon.
Sometime before his debut, Ivan had his "unhappiness removed" by Fyodor via surgery. He has been completely devoted to Fyodor ever since.
He later on appears in Chapter 52 where he attacks Atsushi Nakajima and Ryunosuke Akutagawa. Using his ability and the assistance of Alexander Pushkin, they manage to infect both Akutagawa and Atsushi with the virus.
In Chapter 53, both Atsushi Nakajima and Ryunosuke Akutagawa manage to overpower Goncharov leading to his defeat. Pinned to the ground, Goncharov starts to laugh. He reveals that his master "removed the part of his brain that feels unhappiness." He then says that Fyodor was never in the hideout area and that they were tricked.
- Goncharov considered The Precipice his greatest work, where he fully realised his greatest ambitions. Similarly, Ivan views Fyodor's plan as a great work in need of fulfillment that he takes great pride in partaking in.