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In the world, Hallo (Halo , Hallo , Alô ) is a common gender-neutral forename. The given name Hallo is habitual in Iraq, where it is quite a common predominantly masculine, but very seldom feminine name, Libya, where it is quite a rare unisex name, and Saudi Arabia. Measured by absolute frequency, it is commonest in Iraq, India, and Indonesia. Likewise, Hallo is the last name as well as the forename.
Hallo is also a name for the fictitious and mythical characters: Halo , the comic book character, Young Justice: Outsiders.