Board Thread:General Discussion/@comment-27524978-20160210030742/@comment-27805789-20160226224332

Ok, listen, I'm going to run through things on both sides of this.

First off, we know one character was alive during the war because it was mentioned they fought in it when you call Undyne / Papyrus from in front of their shop - the old turtle dude, Gerson. In fact he is the only one alive who fought in the war.

In fact, whenever we see a species of monster in a family grouping they are all the same kind of monsters - implying they are species that can't interbreed. They might love each other, and form relationships outside of species, but they would not have children. The shorter lived species that had enough generations to populate are absolutely clogging the place, snowdrakes and pyropes and whatnot, but the longer lived and slower breeding species would have few memembers. Some might even be the last of their kind as a result of the war, as it is implied the king and queen are.

However, just because Gerson is the last one alive to fight in the war, does not mean he is the last one alive from that time period. The king and queen are obvious examples, but children and royal scientists might also be included in this.

Sans remembers what the sun is like because he is probably the one who carried his little brother while they were running underground, even if not he could have simply been old enough to remember fleeing the surface as a very young child while Papyrus could not. His parents would have been old enough to fight, and would have likely died.

There's not actually evidence that Gaster is their brother, in addition, that's just a bit O common fannon - and in the origional Demo there is evidence that there was a grandfather character related to the skeletons, Grandpa Semi, who people think was cut to make room for WG Gaster. But what if it was a name change, or everyone forgot his real name once he got tossed into the machine?

Shortly after Sans and Papyrus lost their relative Sans would have likely wanted a change of scenery, and moved to snowden. The rest is history.

Also, and most importantly of all, Sans never dies on camera and your kill counter never goes up for him - he actually escapes. That is why he bleeds, living monsters can have fluids and living bones have blood vessels. It can't be ketchup, monster food gets instantly absorbed when you eat it, that's why it heals you in combat. The giant fangy lass in Grillby's tells you as much. Neither can he simply be a reanimated human skeleton kept moving by a spirit, dead bones are dry and if he had some sort of complicated mask on that made his head look empty and gave him glowing eyes he wouldn't have been able to drink ketchup through it. ;)