The mentalist French woman who went only by the name Belphegor had a history with Doctor Mist, the long lived mystic. She would use her various psionic abilities to help run the Global Guardians.

Belphegor

The mentalist French woman who went only by the name Belphegor had a history with Doctor Mist, the long lived mystic. She would use her various psionic abilities to help run the Global Guardians.

All data from the awesome folks at Marvel.