Sera

Past Timeline
On a rainy day with thunder Sera was struck in the head by lightning and became tiny. She loves wraiths and graveyards. She's the only one who seems to accept Ballista in the Shadow Clan.

Season 2
She is the best friend of Ballista. She experiments on her friend and awakens her and Ballista become much stronger than before, her strength comparable to her late father, leader of Shadow Clan.

She appears in chapter 40 where she is confronted by the seven knights. She refuses to give them answers so Jave starts breaking potion bottles in the laboratory in Shadow's Eye. Eventually she revels that she's working under Dellons and Mercure and trying to create an experiment to bring together the Power of Destruction. Mercure then appears and orders her to leave.

Trivia

 * She's a very likely candidate for awakening compared to the other Shadow Clan members. It's possible she can go back to her taller size with the fragments.
 * She's the only magic character among the other Shadow Clan members.

Season 2

 * Ballista: Friend