[@UnknownScarlet4] [img]http://66.media.tumblr.com/8f8ce1dc3954a54bca359e9e31c0703d/tumblr_ml7jq4zOAC1rp2sxdo4_500.gif[/img]

The Underground group went through a body swap, so just identifying who someone is by their voice isn't enough. Red could have identified Undyne when Sans made the pun, but not by the shout (considering she is in a male human's body), unless she's aware of Undyne speaks compared to everyone else. 

[hr]

....And now I am considering posting a two post per round limit rule. What does everyone think? Anyone in favor? Oppose?