Diez Gentlemen

The Diez Gentlemen are an elite group of 10 senior students in Disgaea 3: Absence of Justice. They are considered legendary among the students, to the point of that many students doubt their actual existence. 5 of them appear in the main story while the other 5 appear in the post game through Bonus Missions. Nine of the 10 Diez Gentlemen are recolors of generic classes.

Prinny Mask
Prinny Mask (プリニー仮面 Purinī Kamen) is described as an "Overly Powerful and Antisocial Man". He was a hermit living in the Prinny Statue until Aurum appeared and asked him to remodel the campus, also making him a Diez Gentleman. And so, at night when the students were out, Prinny Mask secretly began to remodel the campus as instructed. During one of his sessions, a Prinny saw him but rather then tell someone, the Prinny saw him as a kind of "Messiah" giving him the name Prinny Mask, labeling him the savior of Prinnies everywhere. Prinny Mask, reluctantly, took the name from that day forth. He is a recolored version of the Masked Hero Class and uses a Shovel in the battle with him (counted as a Spear Weapon). His native Evility is Heavy Stance, which prevents him from being lifted but increases his stats by 20%.

Beyond X
Beyond X (ビヨンドＸ Biyondo X) is a bizarre girl with the ability to shape shift. She uses that ability to go around campus and mingle with various crowds, gathering a lot of information this way. She can transform almost instantaneously into anyone she wishes. This transformation ability also made other people see her as a cosplay maniac (though, she very openly denies it). She is a recolored version of the Mage Class and uses a Staff in the battle with her. Her native Evility is Pretty Motion which causes her to take 50% less damage from male units.

Shyrone
Shyrone (伊集院 Ijuuin) is a transfer student who goes from campus to campus looking for his mortal enemy, the one who stole his lunch money. However, he accuses anyone he meets of doing it and openly acknowledges that he's doing so. He once commented that transferring from school to school is costing more than his lunch money is worth. His missing lunch money actually went missing after he used it on something else. He is a recolor of the Gunner Class and uses his Fists in the battle with him. His native Evility is Divine Killer which increases the damage he does on Humanoid units by 25%.

Gorillian
Gorillian (ゴリラ丸 Goriramaru) is also known as the Effort Ninja. He can perform wondrous feats through the use of effort. He insists that he is using a powerful Jutsu (Ninja Technique) but in fact, he is just so overly patient that he can stand to do such things. When he firsts shows up, he's on fire for no properly explained reason. His English voice is very girlish. He is a recolor of the male Ninja Class and uses a Sword in the battle with him. His native Evility is Soul Crush which decreases the enemy's SP by 50% of the damage Gorillian deals.

Bo Tie
Bo Tie (ビッキー Bikkī) is a fitness instructor known for his extreme work outs. He loves to work out and build muscles as well as getting others to join in with him. He also has an unnaturally disturbing attraction to sweat as well as its smell. He himself is a over blown parody of fitness gurus and his name comes from the work out series "Tae Bo". He is a recolor of the Male Fighter Class and uses an Axe in the battle with him. His native Evility is Macho Splendor which decreases the damage he takes from Female Units by 50%.

Goro
Goro (吾郎 Gorou) is an animal lover who adores monsters. He fancies himself a gourmet and eats fine meats. Despite loving animals, animals hate him with a passion and on several occasions have bitten him, clawed him, pecked him and even eaten him. Though he doesn't give up, animals still hate him to this day. He is a recolor of the Druid Class and uses Primal Meat in the battle with him (which counts as a Sword Weapon). His native Evility is Dark Blood which increases his stats by 5% for every monster on the map.

Se-to-oh
Se-to-oh (ひろし Hiroshi) is a duelist master and the greatest Netherworld Summoner. However, he is known for being cocky, arrogant, immature, stupid and weak. He himself is a parody of Seto Kaiba from the popular Card Game and Anime Series "Yu-Gi-Oh" (hence his name of Se-to-oh). As such he says stuff like "My Turn" and mentions things like "Life Points". In the battle with him, he summons a bunch of incredibly powerful monsters in one turn and sacrifices them to summon the Black Eyes Blue Prinny (aka, a normal Prinny). He is a recolor of the Ranger Class and uses an Axe in the battle with him. His native Evility is Darkness Pact which increases his stats by 30% but prevents him from being healed by magic.

Pauline
Pauline (ポリーヌ Porīnu) is a mentally unstable and tragic girl. Her family members are dead (but apparently, as are any people that get close to her). She randomly talks about her "Grandpa" and will often ask if she can sing. She also gets tired rather easily. It is hinted that she may have a sort of "Split Personality Disorder". She is a recolor of the Shaman Class and she uses a Sword in the battle with her. Her native Evility is Revival which restores her HP at the end of a turn if it is under 25%.

Breezy Satina
Breezy Satina (さわやかさったん Sawayakasattan) is a bizarre girl. She is overly cheerful and greets people with "Hello, Hello!". However, she loves to kill people and often tries to make a game out of it. She is often seen with a Sabrecat which she says is her friend but she secretly despises the whole species (and vice versa for the Sabrecat). She is a recolor of the Thief Class and uses a Gun in the battle with her. Her native Evility is Blood Insanity which increases the damage she deals by 30% if her target is at less than 50% HP.

Salvatore the Magnificent
Salvatore is a military woman. She goes by the policy "Superior Orders are absolute" and as such, will give orders to everyone including her enemies. Unlike the other Diez Gentleman, she has an original design and special techniques. She uses a Gun in battle. Her native Evility is D-Protection which decreases the damage received from Special Attacks by 50%.

How To Get Them
Apart from Salvatore, each of the Diez Gentlemen can be acquired by starting a New Game+ while Mao is at at a certain level or above (62 for Prinny Mask, 64 for Beyond X, Shyrone and Gorillian, 300 for Bo Tie, 400 for Goro, 500 for Se-to-oh, 600 for Pauline and 700 for Breezy Satina). You only get one for every New Game+. Their playable versions, similar in nature to the Majin class, don't have Weapon Proficiencies so thus they can't learn skills unless they learn them from Club Members by using the Class World. The only exception is Prinny Mask who can learn spear moves. Salvatore herself is acquired by reaching the second last map in the story and is later reacquired beating Extra Map 2 in the Post Game.