- Real Name:
- Amalgamation of Claudette and Nicolette St. Croix
- Other Aliases:
- M (I)
- Known Relatives:
- Carter St. Croix (Father)
Monet St. Croix (Sister)
Marius St. Croix (Brother) - Group Affiliation:
- Generation X
- First Appearance:
- Uncanny X-Men 316 (As M I)
Generation X 40 (As Penance II) - Current Status:
- No longer exists as Penance (II); the St. Croix twins have separated and are living in Algeria with their father