He acts like it

Is it possible that Valak answers to no one but Satan, and all the other demons answer to him?

Possible. I haven’t seen the films in a while honestly so I cant say for certain. But most likely.

Fools! Valak is one of the Princes of Hell, Satan is the ruler and Beelzebub is his second-in-command.

@Abigail Peppercorn Geez, be more nice, but yeah, that was stated in The Lesser Keys of Solomon. Do you think Valak is third in command though?

No. Astaroth is, the Lesser Key or not.