Human guards are enemies which are not alien or mutated. They are generally more common and less powerful than the non-human enemies. They are the only type of enemy that will sometimes flea or run from Blake and wait in ambush. The human-like alien versions of these guards that appear in Planet Strike do not fall into this category. They are also the only actors in the game that have sprites for 8 angles (all other enemies have sprites only from the front and thus always face the player). These human guards only appear dead in Planet Strike, hinting that Goldfire executed them and started using alien guards instead.