Surito Carito appears as a tonberry wearing the standard garb of Nymian scholars. Before his transformation, he was a plainsfolk Lalafell.
The tonberry is seen again and Alka Zolka, the adventurer, and several Lominsan marauders chase it into the Wanderer's Palace. The fairy prevents them from killing him and, thinking she intends them to heal the wounded, they heal the tonberry, who introduces himself as Surito Carito. His rancor lifted, he realizes his soul crystal and faerie, whom he named "Lily," is in good hands. Viewing the adventurer as a worthy heir, he bequeaths a Scholar's gown and teaches the skill Lustrate, before returning to tend to his people.
Surito Carito requests Alka Zolka and the adventurer to meet him on the shores of Bronze Lake. He explains the Nymian plague, the "Green Death," has begun to return, and needs help in recovering warding stones so he can quarantine the worst cases.
Once the quarantine is ready, Surito can address the plague itself. He recounts how the disease first occured: a Nymian trading galley was caught in a storm, and was rescued by a tribe of Lalafell on a South Seas island. The tribe gave them a curious ampoule as a gift. The traders returned to port and the plague swept across Nym.
Alka Zolka notes the disease didn't spread until after the traders returned to port. Thinking the "gift" may have been the source of the disease, they scour the Floating City of Nym for the ampoule. The adventurer stumbles across it in a pile of rubble with several voidsent flocking around it. Surito is horrified when he spots a binding sigil, realizing the Green Death epidemic was a plot by the void mages of Mhach to destroy Nym with a voidsent. Since the ampoule was recovered, that may mean the voidsent is still lurking somewhere on Vylbrand. He asks the adventurer and Alka Zolka let him now if they begin to "change."
While investigating how to track the rogue voidsent, Surito Carito has another tonberry, Halga Tolga—a Nymian Royal Marine drill sergeant—train the adventurer, Alka Zolka, and his subordinates in Nymian military tradition.
Finding the voidsent has left Surito Carito perplexed, and he concludes it must have cloaked itself to circumvent Nymian wardings. He wonders if any modern scholars may know of a way to reveal a hidden voidsent, and Alka Zolka suggests they check with the Thaumaturge's Guild for knowledge. They track down the research notes of a void scholar that perished in the Calamity, and present it to Surito. Armed with this knowledge, he believes he figured out how the rogue voidsent might be tracked: the faerie can sense where the voidsent has feasted on aether. The monster Bitoso is traced to Camp Bronze Lake, where it is exposed by the faerie's light before it can begin spreading the sickness among the convalescing soldiers.
As the adventurer and Alka Zolka battle the demon, Surito Carito arrives with several tonberries to aid the marauders in fighting the voidsent, determined to not let Nym's tragedy befall the people of La Noscea. Once Bitoso is slain and the threat of the plague halted, Surito hopes he can use its corpse to research a cure for his transformed kinsmen.
Surito Carito is first fought as a enigmatic tonberry in the level 40 Scholar quest "The Consequences of Anger," and again in the level 50 quest "The Beast Within."
He is the main contact for all post-50 Scholar job quests, and appears in the final job quest "Forward, Royal Marines," where he and a band of tonberries assist in the fight against the demon Bitoso.