Masan is the name of Hexavier's pet zombie kitten. He found the kitten dead at the park, left there by two teenagers

who started mocking Hex for getting emotional about it. Hexavier killed the boys with their own car and then resurrected the kitten, perhaps using the deceased boy's sacrificed souls to help speed the process along. He intended to let the kitten just go off on his own, but it decided to adopt Hexavier and clung to his back while the zombie boy walked home with his arms full of groceries. He named him Masan, after an Indian demon that curses people with its shadow.