24. What happened to Sev?!
When the clones attacked in Episode 2, we had no reason to see them as anything more than mindless automatons bred for battle. There's no doubt the last part of that is correct, but Republic Commando showed us that hey, clones are people too. Before it had been established that every clone in the galaxy sounds just like Jango Fett, LucasArts took the arguably more believable approach that they picked up on the speech patterns of their non-clone trainers – surrounding voices dictated their accents, not just the voice of Temuera Morrison. This helped the game tremendously, as your four Delta Squad troopers really grew on you throughout the course of the game. In Republic Commando's final scene, trooper RC-1207 (known to squadmates as "Sev" because of the 7) was left behind on Kashyyyk per orders of Yoda, despite staunch objection from the rest of Delta Squad. We would have presumably found out what became of Sev in a sequel. But that never happened.