Real name: Yvette (last name unrevealed)
Other aliases: None known
Identity: Secret
Occupation: Student
Legal status: Unknown
Place of birth: Unknown
Marital status: Single
Known relatives: None
Former bases of operations: Massachusetts Academy, Massachusetts
Group affiliation:Generation X
First appearance: GENERATION X #1

History: Little is known about the mutant known as Penance, save that she was found by the aborigine known as Gateway as a prisoner of the criminal Emplate. Gateway then brought Penance to the newly reopened Massachusetts Academy, saying only the word "Penance" when encountered by Banshee and the members of Generation X. Penance was soon admitted as a member of Generation X.

Some time after her arrival, the Massachusetts Academy was attacked by Emplate and his group the New Hellions, who wanted to take Penance back with them. When Emplate was about to kill Banshee, Penance betrayed Emplate and attacked him, forcing him to flee. Emplate called her "Yvette," giving an indication that he knows about her past. Whether Emplate will reveal this information remains to be seen.

Height: 5 ft. 5 in.
Weight: Unrevealed
Eyes: Red (no visible pupils)
Hair: Red

Strength level: Penance possesses the normal human strength of a girl of her age, height, and build who engages in intensive regular exercise.

Known superhuman powers: Penance is a mutant whose molecular structure has atrophied, collapsing within itself until every part of her body now has the density of diamond. This leaves every edge of her body, including hair and fingers, sharp enough to be capable of cutting through stone. Her dense body also leaves Penance highly resistant to physical injury, and anyone striking Penance without protection will probably cause injury to themself.