Fugō

is a man who was kidnapped by Ōga for his experiments.

Personality
Fugō is a very nervous man, always clutching his briefcase. So desperate to live, he has no problem letting other people die if it means his survival.

Labyrinth Game Arc
Fugō is among a group of Thunder Train passengers taken to Ōga's labyrinth in order for him to run his survival experiments. During the first experiment, Batta voices her opinion that she finds it unlikely that he'll survive on his own, and gets him to hire her for protection, being one of 14 captives to survive the first, collapsing platforms experiment.

When the second test came, the group chose the Light test. Everyone was sent to a dark room. Everyone was a presented a candle that was linked to their life and that if the candle went out, their respective owner would die. Once passing through a watery pipeline and then a desert-like incinerator, for the final stage, everyone had to enter one of two elevators. Soon, it was realised that the elevators were going to slow for the candles to last. As it was made clear their only way to survive was use someone else's candle to extend their own time, Fugō coaxed Batta to do her job to protect him and kill two of the passengers to take their candles. Once everyone reached the top, Batta was surprised to see that everyone in Boruto's group survived by unite their candles into one, extending the group's time.