So is Satana a hero or a villain or is she both at the same time? Maybe even an anti-villain almost like a demonic Harley Quinn no one knows about?

she's not a good person, she's not a villain, she's thr same category as like say current loki.

So then I guess she would be an anti-villain then? as she is written as the protagonist but clearly does "bad" things.

@rondoudou: yep, she even tried to take dr strange 's soul in his 2015 run. she plucked him out of nightmare's realm literally and tried to murder him, even though both are quite acquainted. she's more evil than damien hellstorm.

so maybe anti hero, or she's just evil and sometimes does good deeds