Meggan can add to her mass and shed this additional mass at will. Meggan adopts the special abilities, superhuman powers, and even aspects of the internal anatomy of whatever being she uses her metamorphic powers to imitate. She once became a Godzilla-like fire-breathing dragon, and on another occasion she became a werewolf that had all of a wolf's natural abilities. Meggan can assume the form of other people as well. Her facial features and overall physical appearance often change to a degree with her mood. Although she retains better control of her form as an adult, Meggan may consciously or unconsciously alter her appearance to resemble people or even animals she is with at the time and still occasionally changes form in response to the emotions around her: becoming beautiful when she feels loved, or hideous when she feels fear or anger, or she might become considerably less attractive when deeply depressed. Usually, this happens when she is under stress or spends significant time away from the British Isles. Her elemental powers also cause Meggan to change in response to her surroundings, growing fur in extreme cold, or gills when she is submerged or swimming underwater.