Board Thread:Fun and Games/@comment-28914075-20160831010353/@comment-39385741-20191128181330

Undyne is Undyne.

Proof:

Undyne has 6 letters in her name

Toriel has 6 letters in her name

Toriel is friends with Sans

Sans is a skeleton

Skeletons are normally things that are dead

Ghosts are normally things that are dead

Napstablook is a ghost

Mettaton is Napstablook's cousin

Alphys made Mettaton

Alphys works for Asgore

Undyne works for Asgore

Therefore, Undyne is Undyne.