Board Thread:General Discussion/@comment-27324545-20160105135410/@comment-30778460-20190303063417

(Doing entirely age ranges instead of actual guesses because I can never be too sure. All in human years.)

Frisk: 12 - 15

Flowey: Infinity

Toriel: 30 - 40

Napstablook: Infinity

Sans: 20 - 25

Papyrus: 19 or 20

Undyne: 15 - 25

Mettaton: Uh... No idea.

Asgore: 50 - 60

Asriel: 10 - 12

Temmie: 8 - 10

Burgerpants: 35 - 40

Monster Kid: 8 - 12

Jerry: 11 or 12