Question:  Guardian: The Lonely and Great God starred what BtoB boy group member?
Sentence (from "Guardian: The Lonely and Great God"): Guardian: The Lonely and Great God (), known internationally as simply Goblin, is a South Korean television series starring Gong Yoo, Kim Go-eun, Lee Dong-wook, Yoo In-na, and Yook Sung-jae.
Relevant evidence: Yes