Allis and Ballis were dimensional physicists from the planet Astridia. Vertigo Ballis wrote the book Interstitial Anomalies in Eleven-dimensional Structures. André Allis rewrote the book soon after. The two were extremely fond of each other.
One of their multi-dimensional collaborations collapsed an entire star system. They stayed on the Most Wanted list for years afterward. As a refuge, they frequented Bianaca's Cabaret, where they were put to subtle use trying to stabilise the multi-dimensional maelstrom outside the club. (AUDIO: The Wormery)