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His friends turned into NPCs except for Seongchan. You can check the chronological order of events I arranged here. I hope this helps! (I still have to add info from season 2 tho)
https://docs.google.com/document/d/1fyfND0KcEKCLjX-4X9l66b9U6diWfaakpy1NOWcA8mY/edit?usp=sharing
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they turned into npc’s because they didn’t want to keep replaying the game.
- They couldnt handle the endless deaths and they became weary so they decided to remove their tapes, which turned them into npcs.
we can use him as bait for the killer and help unlock more endings
- they didnt mention using Bada as bait. what they said was "inviting an extra to play the game in our stead" and "we made you insert a tape into the car's cassette player, and then dragged you around, making you play the game"
WAIT SO THATS WHY HE WAS ALWAYS SLEEPING IN THE CAR AND HE COULDNT REMEMEBR WHAT HE DID BEFORE GOING IN THERE??????? Also why isn’t any of the friends creeped out by him randomly knocking Bada out?