こっそり (translations)→ discreetly furtively privately quietly sott-voce stealthily surreptitiously unperceived unseen
にじりよる (translations)→ move pull
にじり寄る (translations)→ approach inch roam slide step
やつ (translations)→ anybody bloke boy chap customer fellow figure fucker guy he his man man-jack one onion puppy somebody something son-of-a-bitch son-of-a-gun stallion stuff talent thing type you
ゴミ (translations)→ cruft jank litter
下種野郎 (translations)→ swine toad
犯人 (translations)→ culprit killer murderer perpetrator villain
連中 (translations)→ all bastard bunch character contingent coterie crowd everyone folk fringe fry group lot member mind mortals observer other people personnel rabble rank run setout SOB swarm them they those variety