Funaki appears as a minor character in Ichi the Killer, serving as the leader of a yakuza clan that shares his name. His primary function within the story occurs during a confrontation with the sadomasochistic enforcer Kakihara. After Kakihara captures and brutally tortures Suzuki, a member of Funaki’s clan, to extract information about a missing gang leader, Funaki personally intervenes. He enters the torture scene and orders Kakihara to stop, thereby saving his subordinate from further mutilation. Following this confrontation, Funaki’s role in the narrative effectively concludes, and he has no further significant impact on the plot or other characters. No information is available regarding Funaki’s personal background, his motivations beyond protecting his clan member, his relationships with other key figures, any development he might undergo, or any notable abilities he possesses.