In MegaMetroCity the miniatures, Heroes or Thugs, can stay out of the game or, from now on remain KO. This happens when their health or hit points are reduced to zero. Thugs (except Final Bosses) have just one hit point, so they just need a single attack to get knocked out.
During the game, a huge amount of thugs remain KO: for them this is something definitive. Not for Heroes. All along the different tiles there are different arcade games machine. Heroes can spend a specific amount of money on them to get their fallen partners back in the game.