Zapo

Zapo is a Moon Whistle and a member of Ozen's subterranean delver squad, the Subterranean Bandits. He is also an observer for delvers who are undergoing survival training, far away from Seeker Camp.

He was tasked with surveying Riko and Reg's progress while they were training under Ozen.

Appearance
Zapo wears goggles and has white hair, with a white terraced beard. He is clad in a dark blue coat.

Personality
Due to his brief appearance not much of his character traits are shown, but he seems kind, devoted to Ozen and cares for Marulk.

Seeker Camp Arc
Marulk goes to get Zapo and the other Subterranean Bandits during the fight between Ozen and Reg, in hopes they can help to stop them.

After Reg regains consciousness he, and the other Subterranean Bandits, infrom him about what happened after he passed out and that Ozen was only testing them to judge if Riko and Reg are ready to hold their own in the next layers.

During Reg's and Riko's training he, and the other Subterranean Bandits, keeps an eye on them and reports their progress to Ozen.

When Reg and Riko leave the Seeker Camp he sees them off with the others.

Marulk
As the youngest member of the Bandits, Zapo cares deeply for Marulk, as seen when he and the other Bandits comfort him for being sad that Reg and Riko left to continue their journey. Marulk also has alot of trust in the other Bandits, seeing how his first instinct was to get them to help stop the fight between Ozen and Reg.

Simred and Yelme
As fellow Subterranean Bandits they share a very deep bond and interact with each other like good friends.

Ozen
He respects Ozen and follows her instructions. Despite her calling them "good for nothings" it's seen that she cares for them too.

Observation Skills
During Reg's and Riko's training he was able to observe them without them noticing or sensing his presence, which suggests him having a high level of experience in stealth operations.

Trivia

 * Zapo is the oldest member of the Subterranean Bandits.