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I have yet to do a genocide route myself but I believe that's supposed to be Chara/The fallen child you name at the beginning of the game. From what I understand Chara wasn't the kindest person and its stated that he hated humanity from Asriel and I guess he plays a role in the genocide run. As to why he's appearing behind Frisk I'm not sure since his soul was stated to have fused with Asriel after he died.
I believe that's supposed to be Gaster. He is a bit of a mysterious figure throughout the game but it's believed he has a lot of powers of space time manipulation due to a terrible accident that involved him falling into the core.
Dr Gaster The former royal scientist, he fell into one of his inventions (either The Core or the machine Sans can't repair) and apparently his body and soul got erased from all timelines so hard it caused certain people close to him to become similarly erased, though to a lesser degree (the hidden NPCs you can get to appear by messing with the game files). The most popular theory is that his consciousness is still hanging around though
but hey, it's rude to talk about someone that's listening.
I don't get why everyone thinks Gaster normally looks like this, he fell in the core, no? If I had to guess, he looks like this because of melting and/or his bones cracking, or jest because this makes it really apparent that he isn't normal.
well its the core or one of the other machines he has made (sans's machine) and we really cant tell what he would otherwise look like so we have to go with old cracked face
I love the idea of Papyrus and Undyne freaking out over Alphys. The whole reptile thing never sparked the idea in my mind that she'd actually shed her skin. I feel that'd be pretty much anyone's first reaction if they didn't know about an animal's ability to get rid of their old "shell".
Am I the only 1 who likes an explanation of what ppl like of this game?
I seen Markiplier play it, I tried it myself, but it really doesn't appeal to me, not a single small ******* molecule of a bit.