A modified soul with the ability to go to another dimension.
Nova is created by Tite Kubo as one of the anime exclusive, supporting characters during the Bount arc. There isn't any current information regarding Nova's character design.
He is voiced by Tomokazu Sugita in the Japanese version and by Roger Craig Smith in Viz Media's dub for North America.
In his Mod Soul form, he's a green turtle with red eyes, flushed cheeks, and no lips. He wears a white, ruffled shirt with a red bow tie and olive green pants with no shoes.
In his Gigai, he wears a black suit with a white fur coat. He wears a dark purple, hood (it has red, 4 petaled flower design on each side) with zipper placed horizontally on his face. He has green eyes and short red hair.
Like Chad, he is quiet and stoic man who is quite amiable. However, he is quite shy as demonstrated with Rangiku and Rukia. When Rangiku tries to greet Nova, Nova zips his hood shut. When the two touched each other one time by accident, Nova immediately turns into his turtle plushy self.
Nova's ability is being able to transport himself and others to a different dimension.