Arka is the actual League S n°5. He is considered as the most powerful and dangerous Traveler killer.
Arka is usually seen shirtless, with Nathalie on his back, and a evil smile on his face. His body type is similar to Attila.
Little is known about Arka's personality. He does seems to be unscrupulous as he does not mind at treating badly Celeste even though she was already defeated.
Became a traveler at the age of 9 after overcoming his fear of spiders.
He fought with Dolche Tejada. It ended in a draw but Dolche had the upper hand.
Arka has the power of the spiders, one of the most powerful powers/Nightmare Kingdoms in Dreamland.
He is well versed in bare handed fighting since he was able to hold his own against the Dreamland N°1, Dolche Tejada. He also seems to be highly tolerant to physical attack. Even Celeste with her titan arm did not let a scratch on him after landing a blow on his bare chest.