Apparently Harry Kim was supposed to appear in season 3 of Picard, but Star Trek Prodigy called dibs on him. So how do you think it breaks down, what parts of Star Trek do each of the series have dibs on? Star Trek Legacy has dibs on both major TNG cast & Picard cast. Shares Riker with Lower Decks. 25th century. Prodigy has dibs on its own characters and Voyager, except Seven and Noami Wildman and Tuvok, as well it appears as Enterprise E. 24th century, shared with lower decks. Lower Decks has dibs on all the ships no one actually pays attention to, but which do the real work. Beyond that I'd add the Titan under Riker. Tom Paris I think makes an appearance. Its mostly I think odd ball characters like Sonia Gomez. I could really see Barkley appearing. Pakleds. The weirder shit or unexpected something this, the more its Lower Decks turf. Disembodied serial killers, Greek Gods, Mob planets, Nazis time travellers, etc..., 24th century. Strange New Worlds, TOS characters, some early Discovery characters that didn't go with Discovery to 32 Century, Gorn. 23rd century. Starfleet Academy, Discovery Seasons 3 to 5 cast, less constrained by canon, 32 Century. Section 31, I suspect with this announced Section 31 movie, Section 31 is now the movie's turf going forward. Maybe future Terran Empire stuff as well. Probably Lt. Ash as well. Empress Georgia Phillipia, aka Cannibal Space Hilter goes without saying. DS9, Coronal Kira, Earth, Quronos, Vulcan, Q, and Andoria are all common ground I figure.