Parkour runner and thief recruited by One. Survives a severe beating in Hong Kong thanks to Seven. Later saved by One on the yacht and goes climbing with Five.
Their relationship develops from operational command into personal loyalty.
One recruits Four, a parkour runner and thief, for the ghosts. One later saves Four during the yacht assault.
Their bond demonstrates Seven's commitment to protecting teammates.
When Four is severely beaten in Hong Kong, Seven refuses to leave him behind and saves him despite One's protests.
They maintain a personal connection after the squad separates.
After the revolution, Four and Five go climbing together.
Explore the full interactive character relationship map of 6 Underground