вопрос о мега сатане

[Бяка_L]

резко меня заинтересовало, что значит знак мегасатаны на листе персонажей, то есть вот эта бесконечность из которой выходит палка и из той палки ещё две палки, если ктото знает подскажите

[Nazemec]

It's the alchemical symbol of brimstone (hence why this symbol is also used for the brimstone item), which is an older name for sulfur.

As to why it is used to represent Mega Satan, that's probably because Satan is associated with Hell, and Hell supposedly smells like sulfur because of its volcanic activity.

Originally posted by Wikipedia:

Being abundantly available in native form, sulfur was known in ancient times and is referred to in the Torah (Genesis). English translations of the Christian Bible commonly referred to burning sulfur as "brimstone", giving rise to the term "fire-and-brimstone" sermons, in which listeners are reminded of the fate of eternal damnation that await the unbelieving and unrepentant. It is from this part of the Bible that Hell is implied to "smell of sulfur" (likely due to its association with volcanic activity).

Source: https://en.wikipedia.org/wiki/Sulfur#Antiquity
(Emphasis mine.)

Edit:
Additional research shows this sumbol is also known as "the cross of Satan", which makes the connection even more direct.

Originally posted by Symbolism wiki:

The Leviathan Cross is sometimes referred to the cross of Satan

Source: https://symbolism.fandom.com/wiki/The_Leviathan_Cross