(Event starter for @spiderstaff!)
Toriel hasn’t bought a costume yet - she’s only just arrived - but she does want to participate in the festivities. Especially if, as she has heard, the costume causes you to transform into another type of creature - that sounds like tremendous fun to her, or at the very least an escape from her creaky old body.
She’s on her way to one of the costume stores that has popped up around the city when she sees, walking cheerfully along the road as well, a human child with gray skin and white freckles, her white hair in a red hood.
She walks up next to her, careful not to approach too quickly and startle her.
“Pardon me, dear child. It is dangerous to go alone. Take this.”
And she offers her paw.
“We can walk together.”