Bo was a young human child who fell victim to Vetra's attack.
Bo was a young boy presumably aged around five. He had black hair and expensive clothing.
Disguised as a clown, Vetra handed out pamphlets with a spider marking on each. He gave one to Bo who had been left in the car while his mother bought some groceries. However on the drive home the spider marking comes to life and possesses Bo making him go into a bloodthirsty state and attacks his mother causing her to drive of the road and crash, killing them both.