Cadence is a mad scientist working for Keri. When Keri discovers a tiny couple in Cadences lab, she immediately thinks they are living dolls. What she doesn't realize is that Cadence has developed a shrinking formula and these are real people but she plays along with Keri's ignorance. Keri doesn't understand what the value of having living dolls would be as they aren't big enough to do anything really.
* Because Keri doesn’t believe they are real people, Cadence convinces her to torment and exterminate them.