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Crelers, also known as Tunnel Crawlers, are highly dangerous Monsters that live beneath the earth. Crelers have a single purpose in their existence: consuming everything, which they pursue through eating, growing and multiplying.

Crelers have all the characteristics of biological weapons of mass destruction and their usage in war has been declared war crime by all existing nations.


Creler Juvenile stages, by Enuryn
(commissioned by Pirateaba)

First Stage of Life[]

In their first stage of life, Crelers can shift from two forms, the Larvae form and the Attack form.

Larval Form[]

When they are in their larval form, the Crelers sleep inside glistening, translucent, oozing red sacks. In this form, their organs, limbs, and teeth are not exposed. They resemble horrible, fat, red caterpillars, glowing faintly from within. Inside their semi-translucent ‘skins’, yellow lines and discolored organs noticeably move around. Any sudden movement might alert them all, which would result in turning themselves inside out and move into the deadly attack form.[1]

Attack Form[]

Crelers have long, almost spider-like legs covered with armor, and a squat, elongated form. They have many legs— even more so than Shield Spiders have— with barbs on them. A red and purple carapace covers their bodies, serving as a protection against damage, with the exception of a small area that leaves their yellowish organs open, making them an easy target. When they open their maws, rows of circular teeth are to be seen.[1] Additionally, they have pincers that assist them in tearing through their prey.[2]

Juvenile []

Juvenile Crelers are four feet high and twice as long, and look like some kind of monstrous pill bug with too many legs, tearing claws, and a glowing, fleshy, transparent underbelly where its organs hang, glowing slightly. The rest is biting jaws and claws. Their main jaws open horizontally, with two smaller maws opening and revealing spitting and gaping mouths.[3]


Adults are considerably larger than juveniles, growing up to the size of a house, and are capable of flying. They can launch projectiles at a very high velocity at their enemies, and their armor makes them mostly immune to magic.[4]


Elders are considerably larger than even Adults, capable of flight and possess numerous additional maws.


Ancient Crelers have yet to appear in the series.

Powers and Abilities[]

Crelers possess a flight-or-fight response that involves them expelling whatever waste or food they possess in order to escape quickly.[5] They have highly durable and sharp teeth, capable of even biting off bones and chewing on them. In addition to their viciously sharp teeth, they also possess incredibly sharp claws. The most common tactic of the Crelers is to throw themselves at their prey, and use both their claws and maw to tear their way through them. In addition to this incredibly dangerous offensive that the Crelers can unleash, they also have the secondary attack mechanism, which is their poison. Both their claws and teeth are coated with a poison which prevents healing potions from working [6], thus increasing their lethality greatly. When this is combined with their highly resilient and durable bodies, they become a dire threat that even Silver-rank adventurers need to be wary of.


  • Crelers seem to be vulnerable to ice based spells. Even a weak ice spell stuns them and makes them unable to move for a time.
  • Although most of their bodies are very hard, making it highly difficult to hurt them with a sword, a small area has their organs exposed, thus making them a very easy target.
  • Despite being very strong against piercing- and slashing type weapons, bludgeoning type ones, like maces or rough stones, are effective against them.
  • They can’t climb rocks.[7]
  • One good thrust is enough to kill them if they’re in their larval form.


A few months of growing time with enough resources might allow them to turn into adults, the nightmares that even Gold-rank teams are reluctant to fight.[1] Many Antinium Soldiers are required to bring down just a single one of them.[8] Those that have lived for over a decade are threats that may prompt the evacuation of entire towns and cities.[9]

Adult Crelers are capable of firing sharp projectiles made from their bodies. They are resistant to magic and can withstand a Tier 5 spell without any noticeable injuries.[6] They are capable of carrying their young inside their stomachs, which also acts as another form of defense. Additionally, they are intelligent and capable of communicating telepathically. If they believe they are outmatched, they will flee a battle if possible. As such, it is considered crucial to immediately slay an Adult Creler when spotted, lest risk the chance of it fleeing and multiplying.


It takes at least a century for a Creler to be classified as an Elder Creler. Due to the fact that Crelers are hunted down, even more so than Goblins, Elder Crelers haven't been seen in over a thousand years. Allegedly, they are capable of wiping out armies alone. Manus even speculates that just two might be able to destroy the Walled City.[4]


Historically, there have been only five Ancient Creler, having appeared when Crelers first emerged from Rhir. They are able to match Dragons in terms of power, as one was able to successfully kill two Dragons, though another Dragon was able to kill an Ancient Creler in turn.[4]


  • Crelers are considered the worst and most universally detested monsters, and are instinctively targeted by all forms of life that can fight them.
  • Normally one gets a bounty for reporting a Creler nest, and a big bounty for exterminating a nest.
  • Crelers are extremely aggressive, as they attack monsters and undead as well.
  • The Crelers are a threat to all species. They have not been born naturally. They had been created, and they are malice and death.[10]
  • Over the last six thousand years since the Creler Wars began, only twelve hundred Silver-rank teams have ever killed an adult Creler,[11] with over eight hundred of those teams being from the eight hundred year span of the Creler Wars.[12]
  • Crelers are able to sense people who have killed other Crelers, and will usually seek them out to kill them in retribution.[13] They can also sense how many Crelers a person has killed.
  • Rhisveri theorized that the foundation of Crelers was one of his siblings who went to Rhir, as Crelers and Wyrms share many abiltities.[14]