A kind-hearted and friendly person, Allen Walker has the ability to see the souls of the akuma which led to his decision to live and fight for them. He eventually realizes that human souls also need salvation and devoted himself to both causes. His wish to save humanity frustrates fellow exorcist Kanda Yu, who believes that exorcists are not saviors.
Awesome cosplay! I wonder what the cosplayer used to draw the scar/tattoo over Allen’s eye? Thanks to Tamimi for sending this!
EDIT: Thanks to anon for letting me know the cosplayer's name is Ring!