Religion: empty shell
Other Names: Penance
First Appearance: Generation X #1 (Nov. 1994): "Third Genesis"
Super? (Has Super Powers/Special Abilities/Technology): Yes
Number of Appearances: 83
"Hollow" is the new name of an allegedly "empty shell" previously called "Penance." The "Penance" shell was previously inhabited by Monet St. Croix, the mutant superheroine known as "M." Monet was replaced within the "Penance" shell by her sisters, Nicole and Claudette St. Croix. Whenever the shell was inhabited, it seems to be a distinct character.
Nicole and Claudette St. Croix were released from the shell, and for a long time, "Penance" was not seen. But "Penance" showed up again in the Loners limited series, inhabited by a new, as-yet unrevealed host. The shell and character was renamed "Hollow" in order to avoid confusion with Robbie Baldwin, the superhero originally known as "Speedball" who adopted the name "Penance" after his role in the Stamford tragedy.
Suggested links for further research about this character and the character's religious affiliation: