One thing he'll learn about Azem is that they can't resist poking a little fun at others, even more so if they're friends.

Azem smiles. "Good. He's not nearly as fussy as Hades, however, he may deny that he needs rest."

That's how they remember him, in any case. In the time since the Final Days and he may have changed. Azem can't say for sure since they've been long dead by the other's perspective.