Cosmic Love

Cosmic Love is the 2nd generation of monsters in Undertale and the daughter of La Belle Aurora.

Cosmic currently resides in Waterfall with her mother as they have no real intentions of joining the others above as the mistreatment of monsters is still ongoing and Aurora fears for her daughters mistreatment but hopes it subsides in the near future.

 Although she wasn't alive when the underground was 'locked' up she has heard stories of how vicious humans were and about the war which caused her to fear them at a young age so she has a small fear of them but none the less she is curious about them.

She isn't entirely powerful or really uses her magic as the underground isn't dangerous as it once was but she'll use it whenever danger occurs or to show off.

 Also, no, she doesn't know any of the original cast, only heard legends and tales of them but they do occasionally appear in the media; she's a big Papyrus fan though.