If those rumors are to believed, and with Maximus already cast, the roles of Black Bolt, Karnak, and Triton are still available for this mystery Lost actor.
Matthew Fox as Black Bolt is something that would make sense as he has the experience of being a leading man before.
If we go on to speculate about what Lost actors could fill these roles, there are a few options that could make sense.
Previously, social media activity has led to speculation that a former Arrow star is Medusa and pointed towards who could play Gorgon and Crystal.