The Morrigan is ancient and complicated. She is both one person and three. She can split into three different forms, each representing a different aspect of war. Each of these forms are the same person, just at different stages of their life. Nemain, for example, has the form of a woman no older than 27 while The Badb has the form of an old crone.
The personalities of the forms differ greatly, Nemain is erratic and can be terrifying to behold while Macha is calm and sometimes motherly.
Nemain
Age
Looks 27
Height
6'0
Hair
Black and very, very long
Gender
Female
Sexuality
Pansexual
Personality
Erratic, volatile, excitable, quiet, perceptive, insensitive
Powers
Enhanced strength and agility, the ability to cause chaos wherever she goes, she can infect people with rage and fear
Macha
Age
Looks 47
Height
6'0
Hair
Black with a few grey strands that falls about to her shoulders
Gender
Female
Sexuality
Pansexual
Personality
Perceptive, gentle, arrogant, assertive, calm
Powers
Enhanced strength and agility, magic, she can easily rouse people to follow her and join her in fighting
The Badb
Age
Looks 97
Height
6'0
Hair
Grey stringy hair that falls to her shoulders
Gender
Female
Sexuality
Pansexual
Personality
Wise, merciful, proud, perceptive, calm
Powers
Enhanced strength and agility, the ability to foresee death, magic, shapeshifting