Stargirl fans will be seeing a lot more of Sylvester Pemberton for season 3, as Joel McHale has been upgraded to a series regular. We've been seeing Starman trying to make his way to Pat and to probably reclaim the Staff for himself, and it's possible that during the third season, he'll have caught up with his old sidekick and will be more involved in the happenings of Blue Valley. It remains to see as to whether he'll be taking up the Starman mantle once more.
The Vulcan Reporter spotted Javicia Leslie on the set of HBO Max's Titans. While highly unlikely there is a crossover, this could be a joint promotion for HBO Max.