Mutie

Vodka Mutini (or Mutie for short), is a small, black, four-eyed kitten that Rose encountered in the Lab accessed from the tunnel beneath the grave of her former cat, Jaspers, in Act 3. After the lab's destruction, Rose took the kitten into her care.

Since it is a black kitten, and lived in a lab connected to Jaspers' grave, it could possibly be connected to Jaspers in some way, most likely one of the mutated paradox clones made using ectobiology. It has not contributed anything yet to the story, and has done nothing more than mess around with Rose's scarf in an unbelievably cute manner.

Vodka Mutini is seen examining the Land of Light and Rain with Rose Lalonde during Act 4. When Future Rose ceases to exist as her dream self in Derse, a bigger cat resembling Jaspers but with Mutie's four eyes is seen. This may be an older Mutie, as that scene took place roughly four months into the future.

When John enters the Land of Light and Rain and crashes through Rose's wall like nobody's business, he affectionately dubs Mutie 'Dr. Meowgon Spengler', a reference to Dr. Egon Spengler of Ghostbusters fame. John took the good doctor with him to the island ruins, and then on into the Laboratory in the The Veil.