Though he once claimed that he would rely on his own powers to achieve his goals, Moria now is incredibly lazy. His motto is "Relying upon others for one’s own objective" and his favorite phrase is "You do it!!". Like other characters in One Piece, he has a distinct laughter which is "Ki shi shi shi". He apparently wants to be the new Pirate King and believes that if he has strong underlings, he can achieve his goal. He almost always smiles and only seems to change expression when something bad happens to him. He maintains a relaxed and laid back stance at all times, seemingly appearing to believe he cannot lose.  Like Luffy, he had many good friends in the past, considering them valuable nakama and considered himself as once too overconfident, like Luffy is. The loss of his crew to Kaidou changed his outlook on life substantially, making him believe that subordinates are better off as zombies, as, due to their undead status, they cannot be harmed by any physical damage. They can only be "purified" by the sea or elements of the sea. Even if they were purified, he could easily find other shadows to reanimate them.
He feels that a true pirate should fear nothing, even death.
The Thriller Bark crew is very loyal and very respectful to Moria, and always seem to care about his well being. Hogback and Absolom show their loyalty by escaping Thriller Bark with an unconcious Moria after he is defeated, although Perona is somewhat questionable, not only attempting to flee when she feels her life is endangered, but taking all rations and treasure with her. Moria on the other hand, cares very little about the zombies of Thriller Bark, as seen when Absalom informs that Brook has returned and is slaying zombies, Moria simply puts him down and turns toward another objective with no apparent concern. Though he views his human crew in a slightly higher standard, he still doesn't seem to display to much dismay if they are defeated.
In stark contrast, Moria appeared to care deeply for his old crew, and still seems to mourn their loss within. This is what apparently gave him a change of heart into turning to zombies for a crew.
EnemiesMoria is currently an enemy of Luffy, who played a role in destroying his army of zombies. That feeling is mutual, and they also seem to see each other as rivals, as they both aim to become the Pirate King. Moria has also gained an interest in stealing Luffy's shadow to empower both Oars and Oars Jr., both in Thriller Bark and Marineford. Moria was also the only Shichibukai to be shocked at the revelation of Revolutionary Dragon being Luffy's father.
However, Moria's apparent biggest enemy is Kaidou, who was seemingly responsible for the death of his old crew. Moria spent ten years creating his zombie army to get his revenge against Kaidou.
ShichibukaiMoria is seen interacting with Bartholomew Kuma, whom he appears to be very ready to fight, as demonstrated when he harshly yells at Kuma for offering assistance. He also seems to have had a hostile encounter with Jinbei, since the latter knows the weakness of Moria's zombie soldiers. The two engage in combat at Marine Headquarters, with Moria claiming that he will steal Jinbei's shadow; however, the fishman lands a powerful hit on him before he can do so.
Devil FruitMoria is able to steal a person's shadow with the Kage Kage no Mi. The loss of that person's shadow causes them to be vaporized if they come in contact with sunlight. Moria is also able create various zombies by implanting a stolen shadow into a lifeless corpse. People who have their shadow stolen are left in comas for two days. If they die, the zombie with their shadow loses the shadow.
His own shadow can also fight for him, while he does nothing but watch. The shadow is mostly solid, and can easily change its form into things like tiny bats. The shadow cannot be destroyed and will continue to reform. Moria is able to switch his location with his shadow's location, which can also be used to dodge attacks.
Moria, in general, prefers to avoid fighting altogether, or at least fighting his enemy directly, either making his shadow fight or ordering one of his zombies to do so.
He however is by no means defenseless, if there is no one left to fight for him, he can fight using his trump card: take every shadow from every zombie on Thriller Bark and absorb them in a style similar to "Nightmare Luffy," except he has 1000 shadows inside of him, instead of 100. This form increases his mass to the size of a giant, as well as giving him a monstrous boost in physical strength. The fact that Moria was able to maintain 1000 shadows in his own body shows his incredible willpower, even though after a few strikes from Luffy caused him to succumb to the strain eventually.
Physically, he was capable of getting about ten minutes after a Gomu Gomu no Pistol and a Gomu Gomu no Storm by Nightmare Luffy that toppled Oars over. Also, he didn't seem to be damaged when Nami's thunder-attack struck Oars. He was once an equal to Kaidou, one of the Yonkou. Due to his size, he can easily carry a normal human with a single hand.
Even if he has no zombies to do his fighting for him or shadows to increase his own strength, he is an ample enough fighter with just his own shadow, as seen when he used it to impale Oars Jr. in the chest.