Chernobog is the god of cold, death, evil and madness. According to legend, he lived in the underworld (Navi) and could not leave it, since the gates of Navi were sealed by Rod, 💀💀💀💀💀💀💀Svarog and Belobog.💀💀💀💀💀💀

According to one hypothesis, the Slavs worshiped Chernobog so that he (the lord of everything bad and dark) would not send any troubles and misfortunes on them either in the afterlife or in this life. He was depicted as an old man with a black beard.

In all legends, songs and tales, he appears as a kind of black entity, the enemy of the light gods and the ruler of all the armies of the evil afterlife, the underworld, hell, the hellish world. In addition, Chernobog is called the Black Serpent and all his sons, daughters, and descendants are called Zmeeviches or Zmieviches. So Viy is called Viy 💀💀💀💀💀💀Zmievich.💀💀💀💀💀💀💀💀

you ask in which religions does it appear?

Chernobog is a character in Slavic mythology, in particular the mythology of the Baltic Slavs.

According to Helmold's "Slavic Chronicle", Chernobog is an evil god who brings misfortune.

Chernobog is also mentioned in the mythology of the Balts, where he is called Vielona, Velns or Vels and is described as a constant enemy of the Thunderer and the master of the world of the dead.

It should be noted that the historicity and divine status of Chernobog are controversial, and there is no consensus among scholars about him.
what is its symbol:I didn't find on the internet how Chernobog was shown in Rus'(
but! I found an idea of what the drawing looks like, I don't know whose
what does he look like in the roleplaying game!
Chernobog (Black God, Chernobozhe, Lord of Navi) is a god of destruction in Slavic mythology. The name indicates the nature: "chern" means "dark" or "black", and "bog" is a supreme being.

History: Chernobog is the twin brother of Belobog, the God of Creation and White Light. Together, they represent the dualism of forces that underlies the Slavic worldview.

Mythology

Some of Chernobog's functions:

Personification of darkness - symbolizes all the negative aspects of life, from diseases to wars.

Destruction - acts as a force that destroys the old to make room for the new.

Destiny - Chernobog is believed to be responsible for punishment and retribution, embodying the principle of justice through punishment.

Balance - Chernobog is necessary to maintain balance between light and darkness, good and evil.

Image: Chernobog was often depicted as a gloomy old man with a piercing gaze, dressed in black clothes. In some interpretations - as a snake or dragon, symbolizing chaos.

Sphere of influence: after the creation of the world, Chernobog was given protection over Nav - the world of the dead, in which he is both a ruler and a prisoner, since he cannot leave its borders.

Veneration

The image of Chernobog in Slavic mythology is ambiguous: he is feared, but at the same time revered. For example:

In many myths, Chernobog helps the Gods of Prav to protect people.

Often helps to calm his proud and willful wife Morena, the Goddess of Winter and Death.

Sacrifices: Black animals, bread and honey were brought to Chernobog to appease him and prevent misfortunes.

Symbolism

The symbol of Chernobog is Navnik. The outline of this sign is somewhat reminiscent of an animal skull - one of the attributes of Chernobog.

Attributes: black horse, raven, animal skull