|“||It would seem your life is spared... for now.||„|
|~ Kain to Cecil|
Kain wears full body armor colored dark purple or blue in most of his appearances. He wears a helmet the shape of a dragon's head that obscures most of his face and sharp spikes extend out of his armor on his shoulders, elbows and calves, to give it an even more draconian look. He has long blond hair, tied back in a ponytail in most appearances. His original Amano artwork and Dissidia 012 appearance seem to depict him with purple hair, but in Dissidia 012 it was revealed to be an attachment to his helmet, covering up his real hair.
In his appearance as "the Hooded Man" in-game in The After Years (which is his first in-game appearance without armor), Kain wears blue garments with a hooded purple cloak. His concept artwork and FMVs instead depict him with blue clothes and white boots with a white hood. His Dissidia 012 outfit as the Hooded Man is based on his concept art rather than his in-game sprites. After becoming a Holy Dragoon, Kain wears light blue and white armor, a winged hairpiece that reveals the whole of his face, and a blue cloak.
Kain is a calm, sometimes sarcastic young man, driven by his dream of following his father's footsteps of becoming a Dragoon and shunning the King's wish for Kain to follow Cecil's profession of a Dark Knight. He has been friends with Cecil and Rosa since they were young, but their relationship is strained by their rivalry as soldiers and their love for the same woman, although Kain hides his feelings. Kain's personality changes when he is possessed by Golbez, becoming cold towards Cecil, though his love for Rosa still shows. Once freed from Golbez's control, Kain is forgiven by Cecil and vows to atone for his past actions, a promise that carries over into The After Years, as he tries to vanquish his dark side and helps Ceodore.