are the Enemigos
you fight in the final rumble
(as well as the earlier elevator section) of Blackstone Tunnel
Fifteen later appear in Whiplash Rapids, as part of the Rumble in the Jungle challenge.
In Blackstone Tunnel, they can wield a Revolver, BB Gun, Flare Gun, Lanterns, Barbed Wire, Pickaxe, Cleaver, or Bazooka.
In Whiplash Rapids, they can wield a Revolver, Pickaxe, Power Drill, or Machete.
Three Cave Crawlers from Whiplash Rapids.
Another Cave Crawler from Whiplash Rapids.