Mido is a male member of the Kokiri who serves as a minor annoyance to Link in The Legend Of Zelda: Ocarina Of Time. He acts very tough and doesn't consider anyone a true Kokiri without a fairy companion (particularly Link, who doesn't have one until the Great Deku Tree summons Navi to be that companion). After the Great Deku Tree dies, Mido blames Link for his death. Later on in the future timeline that Link visits as an adult, Mido feels regret for having treated Link the way he did.
His name becomes one of the towns that Link visits in Zelda II: The Adventure Of Link.