How to revive characters?

[✦ 𝕊𝕚𝕘𝕞𝕒 ✧]

Are they dead for the entire mission? I tried using serum but it doesnt work.
There is no info about that in the game which is pretty frustrating.

[Pixel-Precision]

switch to garcian smith and go back to where the character died, then youll do a button mash and revive the character. if garcian dies its game over so be careful

[YinYin]

There is info about it via pidgeon letters/Iwazaru (he has tons of info in the save room).

Garcian is the cleaner who can retrieve their corpses to revive them. Just don't die as Garcian. That's a game over.

[A Victim of Stars]

You have to find their heads where that character died while playing as Garcian. His ability allows you to revive them with a super short minigame.

[ZeroTimesCookie (Gonzo)]

there is info. did you speak to iwazaru in the harman room?