Satanish stalemated Mephisto and their battle was wrecking Mephistos realm AND the Earth plane at the same time.
In that Hellcat mini, Doramammu laid claim to creating Satanish and referred to him as a minion.
^
It took a combined effort from Damian Hellstorm, Hela, Pluto, and Mephisto to deal with Dormammu.
Now put all the pieces together.
Dormammu wins.
Originally posted by zopzop
That Satannish origin retcon was stupid as phuck. Anyway, Dormammu wins. He created a Hell Lord (Satannish) that's the equal to Mephisto in power.
Yeah, it was stated by Strange that they could resist having their essences "merged again" when he mystically connected their "twin essences" together.
So much for that origin.