Bill Skarsgård's debut on It: Welcome to Derry led to a bloodbath that killed off several key characters. During the Sunday, November 23, episode of the hit HBO series, various characters found themselves in the infamous sewer on separate missions. But their appearance underground lured out one common denominator - Pennywise, the Dancing Clown. Skarsgård's first appearance as the killer crown confirmed that Teddy (Mikkal Karim-Fidler), Phil (Jack Molloy Legault) and Susie (Matilda Legault) were killed before their bodies were left in the sewer.