Goncharov has long, straight, light-colored 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-colored vest. Below, he wears black trousers and plain shoes.
In the anime, it is shown that he has silver hair and a light-brown vest.
Having had his "unhappiness removed", Goncharov 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, Goncharov'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.
Goncharov's ability, The Precipice (断崖, Dangai?) lets Goncharov control the earth element - allowing him to manipulate rocks into golem-like arms or utilizing them as floating, Omni-directional defense, and offense. His connection to earth allows his constant awareness of enemies in his surroundings as long as they are standing on the ground. The rock is incredibly sturdy, withstanding repeated attacks from both Beast Beneath the Moonlight and Rashomon.
Sometime before his debut, Goncharov had his "unhappiness removed" by Fyodor via surgery. He has been completely devoted to Fyodor ever since.
Goncharov first appears when he is serving tea to Fyodor.
Later on, he appears where he attacks Atsushi and Akutagawa at the cave, preventing them from chasing Alexander Pushkin. Using his ability and the assistance of Alexander Pushkin, they manage to infect both Akutagawa and Atsushi with the virus.
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 realized his greatest ambitions. Similarly, Goncharov views Fyodor's plan as a great work in need of fulfillment that he takes great pride in partaking in.
- "It seems that before reaching happiness, there is an equal amount of pain."
- Bungo Stray Dogs Manga: Chapter 52.