|“||Hendrik ssscared me, but he did not kill me... The extract...it was the only way to regain my ssstrength...Ssso I have Vince to bring me...the choicessst morssels.||„|
|~ Arachtagon explaining his plot to the Luminary.|
Arachtagon is a minor antagonist in Dragon Quest XI.
A long time ago, Arachtagon battled Hendrik, but ended up getting defeated and lost one of his eyes. However, he survived and went to hide in a cave under Octagonia. The giant spider had a desire to regain his strength, so he manipulated Vince, the owner of an orphanage home to help him kidnap warriors to him so the spider can suck their extract. In returns, Arachtagon shared the extract with Vince, which allowed him to win at every arena battle. Thus letting him to have enough money to run his orphanage home. When the Luminary arrived Octagonia and won a few arena battle, they found out that Jade, one of the gladiator is missing. They eventually find out they cave where Arachtagon was located and find out that Vince kidnapped Jade to give her to Arachtagon. However, Jade pretended to be kidnapped and exposed their plans to the Luminary, Vince wanted to kill them to silence them, but fainted since the extract damaged his body. Arachtagon then decided to kill the party himself, but ended up getting killed.
After Calasmos's returns, the Dark One brought back Arachtagon to life, this time he manipulated Vince's opponents and gave them the power of Calasmos, but they were all knocked out by the Luminary. Arachtagon then once again tried to kill the Luminary. But he was still destroyed in the end even with his new found power.
Arachtagon is a giant red, green spider with a scar on one of his eyes. When strengthed by Calasmos, his eye glow green.