Tonaja was among the six young
Inhuman children that were escorted into the
Terrigen Mist by the spiritual advisor
Carthus. This group included
Dinu,
Kalikya,
Nahrees,
Neifi, and
Dewoz. The exposure to the Terrigen Mist was a rite of passage for the Inhumans, this process would unlock their genetic potential. The youngsters studied Inhuman history and learned of Inhuman culture. One of their classmates,
Telv, was held back a year, and was not allowed to be exposed to the mist with the others. After her exposure to the mist, Tonaja developed green scaly skin and retractable brown wings that could shrink to small flaps or grow larger than her entire body. The wings gave her the capability of flight, she could carry herself and one other person through the air on the Earth or the Moon.