Arachnus

is a Bukimi class, Earth attribute Rank S classic yo-kai. In the Yo-kai Dictionary, it states, 'A traditional venerable yo-kai appearing from the Heian period. His real form is a very big spider that he sometimes shows when he's quirky.'

YW 2
Get the quest: Pomp and Circumstance: Ganso General! (Ganso only). Then, get the heaven and earth manju by defeating enemies in Amida Paradise and give it to him. After he battles you, he will befriend you along with getting the quest completed

YW 2
Tsuchigumo-Attacker

Kon (Soul)
Tsuchigumo's soul-The yo-kai that has this will strongly resist earth attribute attacks.

Origin
Tsuchigumo takes his name from the purseweb spider youkai with the same name. They're typically evil masterminds that use illusions and trickery to lure their prey, or inflict them with supernatural diseases. The most famous one disguised as a servant and secretly administered venom to the hero Minamoto no Yorimitsu, until he saw through its illusions and struck it down. "Tsuchigumo" was also a pejorative name for gold miners of the Edo period, who polluted rivers with the mercury used to sift gold, and were thus likened to the earth-dwelling poison-spreaders.