Immortal C

wasnt that in a dream? so we may not be sure if he's actually dead or not at that point

Well, you see, his eyes were open. That's it

that was a guilt induced dream N had, he was still dead (but not in season 2)

He was not dead, his eyes were open

that was him moments before he died

Yeah, well, even then, his eyes were open.

that doesn’t mean he’s alive, in episode 25 (or Y), F’s eyes were open, but he was still dead, so I’m assuming that logic applies to C as well

I wouldn't say exactly say "dead".

oh so F was still alive in S1 I didn’t get the memo

Where did this come from?

it came from episode W of Alphabet Lore, you should check it out