They are: Mahaha, who can telekinetically move things (including people) by singing; Rica, who's drumming can manifest magical musical notes; and Mohaha, whose magic hair can move and grab things.
They are laid-back, fun-loving islanders, who enjoy preforming music, having parties. Their island - called Bahahama - surrounds a smaller island - called Smooch Island - like a crescent. Smooch Island is the home to the Smooch, and they consider the island sacred. They often travel to this island my foot (during low tides) to get smooched. They also enjoy omitting the effects of the Smooch to visitors, so they can enjoy watching them go into a giggling and kissing frenzy.
The Haha Men are based on, and voiced by, the real-life Bahamian band called the Baha Men.