Schmidt is the leader of the Holy Dragon Alliance guild in the Sword Art Online franchise.
Kains is created by Reiki Kawahara as a minor character in Sword Art Online that is based on the light novel. He first appears in Sword Art Online episode 5, A Crime Within the Walls. He is voiced by unknown.
During the mystery of Kains murder case, he seems to quite shaken about the recent death. He is one of the three who opposed selling the ring in their guild.