Netflix & Marvel's superhero series Iron Fist debuts its first season today. You can see Hoon Lee as LeiKung, Tijuana Ricks as Thembi Wallace and Sarah Ellen Stephens as Gabriella. Hoon Lee's part supernatural spirit, part guiding voice, tests Danny's (Iron Fist) training both psychically and psychologically. Lei Kung's line “Are you willing to kill Danny Rand so that the Iron Fist might live?” sets the tone for the relationship between teacher and student. Streaming now on Netflix.