- "We do seek peace, but by different means."
- ―Behemecoatyl, when referring to "peace"
The God Bug, also known as Behemecoatyl, is the ultimate caste member of the Arachnids species.
This massive creature is deeply rooted into the planet it is deployed upon and possesses numerous appendages beneath the planet's surface which it uses to capture and kill prey. Fissure it creates are capable of engulfing the planet, and the bug attacks prey unfortunate enough to fall into them. Behemecoatyl is capable of speaking through other organisms.
The God Bug is capable of extending its head from the ground, and appears to share many qualities with the Brain Bug. Its large mouth contains numerous tentacles which allows it to absorb the memories of other organisms - namely humans. It's not known whether there is only a single God Bug or multiple ones.
- "You will know the name of God, the one true god - Behemecoatyl. Brain of brains."
- ―Sky Marshal Anoke
It's not known how long the God Bug has existed and the United Citizens Federation did not know of the creatures existence within the Arachnid hierarchy. The first clues as to its existence came from a captured Brain Bug that remained within the Federation's and was being studied. Through his psychic talents, Sky Marshal Omar Anoke became influenced by its telepathic mind and learnt of the God Bug known as Behemecoatyl. His interaction with the Arachnid Brain Bug led him to revere the God Bug as a deity and developed a religion around it.
When Anoke's starship crashed onto the planet known as OM-1, he discovered that a large part of the planet was the God Bug. He declared it as the one true god much to Holly Little's disbelief, who had mistakenly believed Anoke to be referring all the while to the Christian God, in Whom she worshiped. After traveling to a specific part on the planet's surface, Anoke, Lola Beck and Holly Little encountered the large head of the God Bug. Sky Marshal pledged his worship of the creature and the desire to bring peace though Behemecoatyl devoured him in order to gain all his knowledge of the Federation's military assets though it was unaware of the location of Sanctuary Sanctuary. 'Before it could accomplish its goal, Johnny Rico arrived on the scene with a group of his Marauders who proceeded to wound the God Bug as well as devastate its army of Warrior Bugs. Rico managed to evacuate Becks, Little and the rest of his team to the ship in orbit where they determined the large mass of the God Bug. In order to combat this massive threat, the Fleet deployed their new Q bomb which destroyed the entire planet.
According to the Federation, without the God Bug's guidance, the Arachnids would apparently lose the war. However, with the slightest chance that this may have been the only God Bug in existence, this could also have made the Arachnid armies even angrier and more powerful than ever before, possibly even fighting more violently and gruesomely than previously.