Tough as Iron Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. Gang-cheol is a legendary street fighter in Busan who cleaned up his act to care for his sick mother. Knowing he's desperate for money for his mother's operation Sang-gon proposes that Gang-cheol works for him. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : in, mi, oh, ki, tae, eon, sook, sook, geun, Lee Si, Yoo Ah, Jung Yu, Kim Hae, Kim Hyun, Kim Sung .