Valerie is a blue recolor of Amy Rose that manifested in the Alhambra Hotel and is the first recolor the Busters hunt after they start their business. While she is relatively harmless, Valerie is seen as a nuisance by the Hotel staff, often drawing weird images on the walls with crayons and destroying things with her psychic abilities...did we mention she has an odd fascination with Sonic?

Due to being a lower-level Recolor, Valerie cannot talk fluently...instead making child-like noises and grunts much like the character she parodies, Slimer. Although, unlike Slimer, she can say some words (mostly just syllables) with varying correctness.

Ghostbusters clip for reference: https://www.youtube.com/watch?v=nJ0lE01alik