Haha oh by the way no big deal or anything but
Sans testing out that book he found! Little does Papyrus know what he's in for over time.
They took Gaster out on a nice picnic to try and break the news to him gently but there really wasn't any way he was going to take it well.
In the Pacifist epilogue, if you talk to Gerson, he tells you that Boss Monsters are the strongest type of monster and are basically immortal. When they have a child, their SOUL energy flows into them causing them to grow as their parents age. When the child dies, the Boss Monster stops aging again. So there you go.
that waterwheel alone took an hour and a half ugh
Edit - Check out Phoenix Prime's dub!
Sans, Papyrus, Asgore, Toriel, Gaster (c) Undertale: the even more rare and elusive happy Gaster
Caught bone-handed, Sans~! I'm glad Asgore was cool with this. If it were Gaster, he'd LOSE the hand.
Speaking of Asgore, that date he went on with Toriel was so pretty looking! I freaking love Waterfall. <3
Poor Gaster, though. He seriously thinks that he's about to lose his family for the second time around.
It was so cute/bittersweet seeing him all excited over technology. He reminded me of Alphys, in a way.