the youngest military commander& #39;s bodyguard w/ no lines. he was injured and fell off a horse during shoot but continued filming. the director impressed of his determination then decided to give him a short scene w/ dialogue
ki w/ experience as a short track speed skater who competed in national games (but had give up due to serious ankle injury) helped him for his role with the same description that showed off his skating skills
he befriended, bonded and practiced scenes with the puppies & labrador maeumi
he wore accessories & thoroughly studied the mischievous characters of gang dong won in jeo woo chi, lee yeon kyeol in swordsman & johnny depp in pirates of the caribbean
he was called "pretty boy, flower, brainy, active, enthusiastic joong ki" for his optimism in race missions but often result in failure
rumor has it that he searched for the undocumented history of king sejong; he said his preparations were "a drowning man will clutch at a straw"
first leading role in tv series; he fully prepared for technical parts, his emotional takes are determined on set
watched nature documentaries, films like edward scissorhands, let me in & lord of the rings, observed dogs, learned miming and imitated animals
after military, he trained for months to get in shape, got injured as he mostly did scenes w/o stunt double