Awakening

When a person previously considered a mundane begins to exhibit super powers, this is known as an awakening. Awakenings often take place under conditions of stress. If the new power is not controlled, the situation can be dangerous both for the new super and for those around them.
Occasionally, a person with super powers experiences a second awakening and gains different/upgraded/alternative powers. Such second awakenings are rare and dangerous. Around twenty percent of those who experience them perish.
There have also been a few incidences of third awakenings. These are even rarer and more dangerous than second ones.