Bellriver

Bellriver (ベルリバー) was a guild member of Ainz Ooal Gown and regarded as one of the Forty-One Supreme Beings by the NPCs of the Great Tomb of Nazarick.

Appearance
Bellriver's game avatar is that of a heteromorphic magic knight, whose appearance resembles a four armed humanoid. His body seems to be entirely made out of red flesh. Additionally, there are mouths gaping out openly all around his body.

He wears purple organic looking armor with light yellow spikes.

Personality
During the interactions with his comrades during Nazarick's plan, Bellriver could be considered a prudent and realistic person, but disposed to risk by their friends. Although it is possible that Bellriver has changed over the course of time, since he was among the guild members that wanted to try to conquer one of the worlds in YGGDRASIL.

It was stated by Momonga that Bellriver was among the intellectual elite of their clan.

Background
Bellriver was one of the Supreme Beings involved in the design of Spa Resort Nazarick. He was among the 27 members of Nine's Own Goal that later became the founding members of Ainz Ooal Gown as well as the conquerors of the Great Tomb of Nazarick.

In the real world, he learned some ominous information about the megacorporations which ruled the world and was killed in an accident to seal his lips. The information he possessed made its way into the hands of a certain someone.

The Two Leaders Arc
Ainz noted that the dense forest located in Spa Resort Nazarick was artificially created by Bellriver alongside his assistant, Blue Planet. These two modeled the forest after an area that existed in the past, the Amazon river.

Abilities and Powers
Bellriver played YGGDRASIL as a magic knight. Although it hasn't been specified if that title is a job class or a terminology on the game, like magic caster. Still, it could be assumed that such title is referring to the former or a type of player with a combination of warrior and magic classes.

As a magic swordsman, he was the type who switched between swords and spells. However, he was a jack of all trades but a master of none, so he was often a second-choice pick as a party member. That said, he was good in a fight, and his ability as a gamer was quite high.

Main Equipment

 * Ring of Ainz Ooal Gown: It allows the user to freely teleport between every room inside Nazarick. Every member of Ainz Ooal Gown was required to wear this ring.

Momonga
Bellriver thought that if someone other than Momonga became the Guildmaster of Ainz Ooal Gown, the guild would surely tear itself apart. Therefore, he wanted to join a different guild with Momonga.

Tabula Smaragdina
Bellriver and Tabula shared the same opinion that if someone other than Momonga became the Guildmaster of Ainz Ooal Gown, the guild would surely tear itself apart. Therefore, they wanted to join a different guild with Momonga.

Punitto Moe
Bellriver and Punitto Moe shared the same opinion that if someone other than Momonga became the Guildmaster of Ainz Ooal Gown, the guild would surely tear itself apart. Therefore, they wanted to join a different guild with Momonga.

Trivia

 * In the Web Novel, Bellriver is the strategist of Ainz Ooal Gown.
 * By the description of his appearance, his race might be a gibbering mouther.
 * He was one of the four members of Ainz Ooal Gown that suggested to try to conquer one of the nine worlds of the game.
 * So far, he is the only known player in YGGDRASIL to have died in real life.

Quotes

 * (To Momonga): "Still, that should be impossible. We don't know the ideal level to clear that dungeon, and trying to clear a dungeon blind will be difficult, even if it's a very low-levelled dungeon."
 * (To his guild members): "What about our dropped gear? I don't want to rely on cash items..."
 * (To his guild members): "I'm not too keen on this, but since Momonga said that, I'll take part. Although I'd like it to be noted that I opposed it."