The Crawler is a very common enemy, and also one of the weakest. As it's name, It crawls onto you and bite/hits you on the legs.
It is a crawling person with a black suit and a bleeding head with blood in various different spots such as its arms and legs. Its showing skin is green, showing signs of infection.
It will crawl towards the player, getting delayed on most of the obstacles.
- It has different versions: the City Crawler, the Hospital Crawler, the Desert Crawler, the Infected Scientist and the Parallel Crawler.
- It may be a reference to crawlers from multiple different Call of Duty Zombies. Crawlers in COD are often left alive due to their minimum threat to allow players to explore maps, Easter Eggs or maybe prepare for the next round.