Dusk

Most of the information we have on Dusk is shrouded in mystery, but it is known that he holds Glimmer, the fabled weapon of Aes the Brass.

It is apparent that Dusk does not even know his own story, as he never mentions it, and when questioned by Serck (In between seasons 3 and 4) he states that 'He cannot remember'.

Dusk is first revealed to the audience during his debut in season 2, and from his dress and ability to control the elements suggests that he is a druid. Or at least possesses druidic magics. Upon meeting the party, he found a group of people who did not care where he came from and quickly befriended Leon and the rest of the group to aid them in their mission.

Dusk always remained faithful to his allies and constantly is trying to restore balance in the world.

Origin