Board Thread:General Discussion/@comment-27324545-20160105135410/@comment-32392251-20180213173734

I have some Semi-Canon ages,based on some Monsters's Undernet Usernames

Napstablook:93-96

Papyrus:20-23

Undyne:24-27

Also,don't forget about some monsters that are over thousands years old:

Toriel

Asgore

Gerson

Asriel (Dead)

Gaster (Maybe)

Sans (Maybe)

And to finish,some characters with ages confirmed:

Burgerpants:19

Temmie:17-21 (Not confirmed,but very likely,since she is on College)