Guren

紅蓮

Area Guardian of the 7th Floor's "River of Lava" · Nazarick: Area Guardians & Other NPCs · Heteromorphic (slime / colossal Abyssal Slime) · Lv 90

Personality

Almost no dialogue is depicted. It curiously follows visitors, swimming alongside them in the lava as if playing.

A combat-specialized Area Guardian; within its own lava domain it is even harder to deal with than its superior Demiurge
Needs no air; lurking in the lava, it drags enemies in with extendable tentacles
Constantly emits a fire aura; a Homunculus Maid getting too close could be seriously injured

BD bonus novel The King's Envoy (first appearance): As the Death Knight Ainz sent with a message crosses the 7th Floor's River of Lava, it curiously swims alongside for a while; the Death Knight, thinking even being played with would be fatal, is relieved only when it leaves
Vol. 14: After the Sorcerer Kingdom destroys the Royal Capital, it is summoned there and ordered to burn the capital to the ground except for the royal palace, preserving the palace's exterior (presumably for sanitary reasons)

When fighting in its own lava domain, it is harder to deal with than its direct superior Demiurge.