There are no titans in the game yet
And no timeline on when they will arrive either. Maybe when the Vasari loyalists arrive (those will probably arrive the next patch, otherwise the one after that -but it was listed as Spring 2023), or maybe with the Vasari rebels or an intermediate patch.

I actually just read in the discord that Titans will get a special treatment and release a lot closer to 1.0 launch, so it'll be after all six factions are implemented, which will not be before somewhere in 2024 (current ETA of advent loyalists is Autumn 2023).