Haruhi Fujioka
Haruhi came to the fancy hallways of the Ouran High School as a commoner dressed in odd baggy clothes and throughout the entire first day as a boy! It wasn't until the end of episode one that the Host Club members discovered that just wasn't true.
Takashi Morinozuka
He's a senior attending Ouran High with Hunny-senpai a senior who's also his cousin. Both of them are in the same class. The only reason why Takashi joined the Host Club is because Hunny-senpai did. He is a tall, tanned, dark, handsome, quiet guy. He's the perfect guy for girls looking for guys who have the same traits as Mori-senpai has. He IS quite popular with the ladies who goes to their Host Club. Like Kyoya said "His taciturnity is his selling point"
Suou Tamaki
Suoh is the Host Club President or the King of Hosts. He is overprotective over women and believe that women should be happy. Suoh could swoon a girl with a simple caring look and a few flashy words (also equipped with fake tear drops)
Kyouya Ohtori
Kyoya Ohotori is the vice president of the Host Club, founded by his best friend Tamaki Suoh, who is the president. Kyoya is the one who basically runs the club, paying for expenses, buying costumes, and balancing the checkbooks. Kyoya is sly, clever, and mysterious, and will use others as he sees fit. As he says, "use whatever is at hand, be it friend or foe."
Hikaru Hitachiin
Of the twins, Hikaru is a little older and a bit more in control of their yaoi-like acts. Before their "customers" with the host club, Hikaru tends to heal the little things from Kaoru, his twin brother, by giving off the famous brotherly love look to make the girls awe. In most of these situations, even not in public, Hikaru is, as Haruhi says, "one level rougher" than Kaoru. He is pretty possessive of both his brother and Haruhi. Although together, these twins are the Little Devil Type and love to be mischeivious together! It's hard to tell them apart.
Kaoru Hitachiin
Of the twins, Kaoru is a little younger and a little more innocent than his brother, Hikaru. In acts of making their customers happy, as their role to make all girls happy and amused, Kaoru and his brother put up their incestful looking acts of yaoi to make them go in awe. It's usually that Kaoru would end up saying or doing something clumsy on purpose (sometimes) and his brother would go to heal that problem with a kiss on the finger or just hugs and comments of the fake (maybe) night before. But Kaoru is also a bit smarter and not as possessive, he has even set Hikaru on a date with Haruhi once to try and configure his brother's feelings. Although together, these twins are the Little Devil Type and love to be mischievous together! It's hard to tell them apart.
Mitsukuni Haninozuka
He's the loli-shota type host in host club. He joined the club with Takashi because Tamaki Suoh asked Hunny-senpai to help him create the Host club. And yet, he attracts many clients with his cute and adorable act. Both in anime and manga, flowers would appear every time he talks. He maybe cute and small, but he's pretty strong since he was a middle school champion in karate and judo