Ok, it's not an ocultist simbol, it's one the the alchemical simbols for sulfur (brimstone) the other one is

and the simbol is not satanic, its just that Anton LaVey the founder of the church of Satan adopted it for his cult in 1960, before that it didn't have any satanic connotation.

Besides i doubt nintendo would put something satanic in their games when they didn't add religious things to the games after so many years. (i'm talking nintendo games not third party games like Isaac: Rebirth)

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the whole problem with this thing is that in japan animated tigers have the 王 (king) symbol on there for heads

all that for head stuff means is that it's going to become a tiger not Sluphor