*waggles hand*How would you folks rate Odyssial in a fight vs the Hidden Masters? Is he the success we have to measure ourselves against?
Odyssial's power was vast and varied; nonetheless, he was slain by the Exalted Host.
If he has time to prepare, there's basically nothing he couldn't surmount. He was building the counter to their efforts (king stands alone) when they struck him down.
That said, The Hidden Masters are well in excess of our estimation. It's possible that they could be another force capable of smothering Odyssial in the midst of his apotheosis. (the early bit anyway, the ascension never ends)
If he's just dumped in a world like Hunger was and made vaguely aware that some force out there is out to get him, then no.