Ōga

Ōga is an elderly man who kidnaps people for his survival experiments.

Personality
Ōga is an eccentric if not deranged old man. Amoral, he is so fascinated by the concept of life and death, of how people are able to escape death, he has no qualms about putting people in peril just to see how they will react and likewise will kill people just as randomly. In his pursuit of researching survival instincts, he is shown to be very elaborate and methodical in his experiments.

Appearance
Ōga is a short, elderly man of heavily wrinkled, light complexion. He has a wide smile with several missing upper teeth, pupilless green eyes, scraggy white hair reaching his lower back with a long white beard. He wears brown cloths and a red cap with a yellow tongue and white wings on the side.

Abilities
Ōga is a skilled puppeteer, able to manipulate one disguised as himself from a far. He can use the Yin Release to project himself in front of people. He also is skilled in fūinjutsu and space–time ninjutsu, having set up several scrolls to warp people to new locations.

Labyrinth Game Arc
When several passengers on the Thunder Rail survived an accident, Ōga captured them and placed them in his chamber. Upon everyone waking up, Ōga introduced himself via puppet. He explained to them what happened and how they will all be put through several tests to earn their freedom. His first test was to pick a random card from his hand that designated them as either dead or alive. A Kiri-nin grabbed a card, which was marked "dead". Promptly, Ōga stabbed the man in the head to make his intentions clear. After his puppet was destroyed, he appeared before them with genjutsu. He revealed to the prisoners five scrolls, each housing a test. A Kusa-nin angrily knocked over one of the scrolls, inadvertently opening it to activate the "Collapse" test. The prisoners were then warped to location where they stood atop a weak floor hovering over a void that was steadily crumbling. Their test was to escape it. As Boruto Uzumaki and other ninja worked together, they were ultimately able to save 14 of the prisoners while others took too long to escape. Ōga congratulated the survivors, telling them the tests would get increasingly more difficult. He then returned them to their room to rest.