You are a human or a OC =]

You were friends with Sans and his brother Papyrus, for a long time now. You almost felt like a little annoying sibling. Recently; Papyrus got a few new things in his room, and he’s absolutely stoked about it.

Papyrus waved his bone-y hand to a flag; it had a skeleton on it.

“AND LOOK AT THIS FLAG UNDYNE GOT ME! COOL; RIGHT?”