Since 2017, the relaunch of Star Trek as a streaming TV empire has produced a huge swath of new characters. From Discovery, to Lower Decks, to Prodigy, and even the first two seasons of Star Trek: Picard, a key feature of most new Trek shows has been new characters, regardless of which time period each show takes place within. That said, Discovery started as a TOS prequel, which gave us new versions of Captain Pike (Anson Mount), Mr. Spock (Ethan Peck), and Number One (Rebecca Romijn). And now, with the fourth season of Strange New Worlds coming at us at warp speed, it’s possible that this season might have the highest number of legacy characters in any modern Trek show to date. But, only if Strange New Worlds Season 4 is hiding a few surprises character appereances.
Now, one could argue that Picard Season 3 has the highest number of legacy actors simply because it’s basically a Next Generation reunion. And, in terms of actors from previous iterations of Star Trek appearing in a single season of a new Trek series, that’s certainly true. But when we talk about legacy characters, things get a bit more interesting.