Greed

(Japanese:グリード, Gurīdo) is a greedy Homunculus, most known as Ultimate Shield, as he can change the density of his body to that of the carbon, being weak as graphite or hard as diamond. Like his name, he is very greedy. He also has a habit of flipping people off in the manga.

Manga
Greed, the third Homunculus created by Father (according to Perfect Guide Book 2), apparently abandoned the other Homunculi over 100 years before the start of the series and claims to be around two centuries old. He first appears hiding in the Devil's Nest in Dublith, with his gang of chimeras all of whom he apparently rescued from military experimentation. After learning of the Elric brothers' battle with Scar, he becomes intrigued with the notion that the youngest brother, Alphonse, is an independent soul bound into a suit of armor. Contrary to fact, he believes that existing in this state would make him truly immortal. He sends out his gangs smallest member, the lizard chimera Bido, to confirm his suspicions. Bido locates the brothers, but is discovered and barely escapes the two.

His hopes confirmed, Greed orders the rest of his gang Roa, Dolcetto and Martel to capture Alphonse. After a long chase the chimeras capture and bring Al to Greed where he introduces himself and starts questioning Al about his empty armour. After a short conversation, Al synthesizes stone fists to crush Greed. To his shock Greed shrugs the hits off then orders Roa to smash his head to pieces with his hammer. In seconds, Greed rises up with no wounds, explaining that he is, in fact, Homunculus. Some moments later, Izumi Curtis storms in to rescue Alphonse. She quickly gets in a fight and finds herself outmatched by his Ultimate shield. After she is beaten, Alphonse agrees to make a deal with Greed, to stay with him willingly in exchange for information on Soul Attachment. Greed agrees and Izumi leaves Devil's Nest to tell Ed about the deal. Suddenly, Führer King Bradley arrives with Alex Louis Armstrong and an army unit to reclaim Al and eliminate the chimera's.

Shortly after, Edward rushes into the Devil's Nest to rescue his brother and confront Greed. Finding him Ed pays no attention to Al and Greed's suggestions about a deal and demands Greed to free Al, saying he wants nothing to do with his plans. Dolcetto tries to physically force Ed to agree but gets beaten in seconds. Seeing what Ed is capable of, Greed fights Edward alone. After getting his neck broken, Greed changes to his completely armored form.

How practically invulnerable to physical harm, Greed seems to gain the upper hand in the fight. Ed however quickly figures how to alchemic process behind the Shield (rearranging carbon molecules into a diamond-like form) and nullifies it with his own alchemy. Before the two can finish there battle though, Bradley's army unit storms the Devil's Nest. Greed manages to escape, with Alphonse still in his custody. However, in the sewers below the club, he is met by King Bradley. Not knowing the Fuhrers real identity, Greed orders his gang to dispose of him. In a matter of minutes, Bradley kills all of Greed's gang (except for Bido), before revealing himself as a Homonculus. After repeatedly killing Greed until his Philosophers Stone is almost depleted, Bradley impales Greed with four swords and takes him prisoner.

Shortly after that Greed is brought before Father and the other Homonculi and recognizes them all save Bradley who then reveals himself as Wrath. After gleefully insulting Envy he flippantly refuses to rejoin Fathers scheme. Knowing he is too troublesome in his current state Father lower Greed into boiling vat and melts him down into his consistuent Philosophers stone. Greed remains defiant to the end laughing manically and screaming curses at everyone present.

In Chapter 54, Greed returns to the story as Father exudes his son's Philosopher's Stone core and inserts it directly into the body of Ling Yao to create a second Human-based Homunculus and fill the empty space left by the first Greed's defection and Lust's death. Inside the Xingese Prince's body, Greed speaks with Ling, who accepts the Homunculus' power of his own free will, but not before expressing surprise at realizing that the prince's greed could parallel his own. This second Greed maintains all the same personality and powers as the first (his Ouroboros tattoo is even in the same spot), but appears to have none of the memories, not recognizing Envy, Gluttony or the Elric Brothers. As such, he becomes a faithful servant of his Father as the first Greed was presumed to have been initially and refers to all actions prior to his rebirth as having been done by "the other Greed". But as a result of being accepted willingly into a body with such a strong will, it seems that both the consciousness of Greed and Ling exist in the same body, with Ling being able to take control for short periods of time as made apparent when Edward wakes up Ling's consciousness by mentioning Ran Fan and when Ling tells Wrath to shut up for insulting humans. It would appear that when the right eye is covered by Ling's hair, Greed is in control and when the left eye is covered, Ling is in control. Though Greed respects Ling for having the avarice to accept his power and the will to take over his body, he is very annoyed by the fact that Edward keeps calling him "Ling".

Greed's new position seems to involve standing guard over Father's lair and dealing with intruders, as witnessed in Chapter 73 when he is spotted merely watching Father sleep and, more poignantly, in Chapter 82 when he chases Bido (who has blundered into the Homunculi's inner sanctum) with the intent of killing him. Because the new Greed shares powers and mannerisms with the first, Bido recognizes him despite his different body. Greed is confused by how much this odd stranger knows about him, but shrugs it off and uses Bido's relaxed guard as an opening to kill him, stating that the lizardman has the wrong Greed. But as soon as Bido dies, Greed begins to have mental flashes back to his first life and his comrades at Devil's Nest and begins trembling uncontrollably. Ling berates the Homunculus from inside for killing a comrade and believing that the old Greed's memories and feelings could be purified. He informs Greed that things that have become part of a soul can never be truly washed clean or forgotten. Holding Bido's body in his arms, Greed has a complete mental breakdown and then rushes to the Führer's mansion to confront Wrath. The two Homunculi do battle as Greed demands to know what is going on, but when Greed notices that Pride is there as well, he flees, defecting from Father for a second time.

In his state, Ling takes the body over again and wanders to Mustang's safehouse outside Central City, encountering Edward, Heinkel and Darius. As Ling threatens to divulge parts of Father's plan to them, Greed takes over once again. Edward offers to allows Greed to join the good guys, after learning that he has left the Homunculi forever, but Greed says that his greed can not be satisfied by working for Edward or merely being the Emperor of Xing, as he desires the whole world. The only way he'll help is if Edward offers to work for him instead, which the Fullmetal Alchemist accepts. For the next few months, Edward, Heinkel and Darius work as Greed's outlaw henchmen, using the basement of the Rockbell house in Resembool as their hideout before returning to Central for the final battle. They are confronted by Pride and Gluttony, against whom Greed must allow Ling to fight with the body under his control because he can sense the Homunculi's aura, but after Gluttony is killed and Pride is trapped, Greed takes his chance to escape from the battlefield. Realizing that the only Homunculus left to guard Father is Sloth, he heads to Central Command to take a stand against his creator.

Greed reappears in Chapter 97 to confront the returned Wrath at the entryway to Central Command.

Powers and Abilities
Being a member of the homunculi, Greed (in both incarnations) possess the standard abilities of his race: rapid regeneration, enhanced strength and speed, as well as immortality. As for his homunculus power unique to himself, he has the ability to re-arrange the configuration of carbon atoms of his body, allowing him to convert his skin into an indestructible substance. He usually uses this ability to partially strengthen the density of selected parts of his body during battle, but can apparently extend the effect to its entirety. In this form, he resembles a black-skinned demon with a malevolent facial visage

As dor the second Greed, while sharing the same powers, these advantages are further enhanced by Ling's abilities such as superior agility and knowledge of Wrath's sword skills, though he generally prefers to use his ultimate shield to turn his hands into claws and has yet to display full form

In the anime
The second oldest of the Homunculi, Greed was created by Dante. However, due to his avarice, Greed rebelled and was eventually captured and sealed. He escaped 130 years later with some of the Lab 5 prisonders. After hearing of a new homunculus (Wrath), he searched for him, intending to add him to his group. The attempt to free Wrath from custody failed due to Greed, Envy and Sloth. Later, Greed and his group attack Alphonse, kidnapping him. He explained to Al that the reason for the kidnapping was Greed's desire to learn how Al's soul was attached to his armor. He was then interrupted by Izumi and Ed but just minutes after they started their fight, they were interrupted by state alchemists and forced to flee. Later, Greed was killed by Edward Elric after he figured out how to transmute Greed's body structure, allowing him to pierce Greed's heart, killing him due to all the Red Stones previously leached out of him. Before dying Greed told Ed how to weaken the Homunculi.

In the OVA "Reflections", a segment possibly reveals Greed's past and the reason he broke away from the rest of the Homunculi. A voice-over by Envy stated that Greed was Dante's former lover and the current him still loves her. Envy goes on to state Greed was merely an experiment. He denies being some love-struck fool and storms off in a huff.

In the same segment, Greed states that Envy always did like to torment him, so the story could actually have been a lie. But seeing how even though he was dying, Greed didn't inform Edward Elric of Dante's involvement with the Homunculi; and the fact he backed down from harming Edward when he noticed Dante was watching, Envy's story could actually be true.

Last Words:''I'm greedy as hell, always out for myself. She always said it would be the death of me. They pull the strings, now cut them. I'm counting on you, kid''...

Trivia

 * In the 2003 Anime,When Greed goes into his full Armor state, his mouth doesn't move (unless he laughs), however in Brotherhood, When he uses his armor, his mouth does in fact move.