Mikuo Hatsune Is Miku's Brother Usually Older . Personality-Wise He Has No Differences From Miku Besides The Fact That He Is Male And That He Carries A Masculine And Lower Pitch Of Miku's Voice. He Wears Black Pants Instead Of Miku's Skirt. His Hair Is Usually Loose And Short Though Some Users Draw Him With Two Pigtails In The Same Manner As Miku's.