Sloth

Sloth (Japanese:スロウス, Surōsu) is the name given to two very different homunculi due to the sheer differences between the anime and manga.

In the manga
In the manga, Sloth is not introduced until midway through the series, where he is revealed to be a large, muscular, dim-witted man. He is tasked with digging a gigantic transmutation circle beneath Amestris to be used in turning the country into a Philosopher's Stone. Though he is briefly impeded in this job when he runs into the Elric brothers at Briggs Fortress, he is allowed to continue his work, finishing the circle in chapter seventy-eight. Just as his name, Sloth is always wanting to rest and finish his job so he can stop working. When Greed is captured by Wrath, he asks about Sloth and Lust answers saying he is still working, meaning he was already making the tunnel before Greed left the group one hundred years before. After finishing the transmutation tunnel, he acted as Father's personal bodyguard, following him when he took direct control of the army and sleeping near Father's throne when he has nothing else to do. In chapter 91, he was sent to deal with Major General Olivier Armstrong when she took one of the corrupted generals of Central as hostage, killing the hostage in a surprise attack. After a lengthy battle with the two Armstrong siblings with assistance from Izumi and her husband, Sig, Sloth topples over and is impaled by a sharp earth protrusion. As he attempts to recover, his arms begin to quickly disintegrate. Realizing his death forthcoming, he embraces his end with a smile, stating that merely living was too much effort for him. Sloth is the 4th Homunculus to die. Sloth's tattoo is located on his right shoulder blade and is listed in Perfect Guide Book 2 to be the fifth Homunculus created by Father.

Powers and Abilities
In combat, he uses his fists and the chains on his wrists coupled with his astonishing physical strength. Sloth's hide is so impenetrable, that nothing short of heavily-shelled ammunition could pierce it from a distance. In his most devastating attack, he hurls himself towards his foes at incredible speed, like a living missile. In fact, his speed is so formidable, he appears to have no means of controlling his trajectory, and thus incapable of stopping himself without crashing against something or someone. He claims to be the fastest homunculus. This being ironic as the definition of sloth means being slow or sluggish. His regenerative abilities are notably slower than those of the other homunculi. He is able to use this to his advantage, however, by stretching out the tendons in his muscles, increasing the range of his attacks.

Trivia

 * In comparison with the other Homunculi, Sloth's abilities and powers are the most simplistic: Super Strength and Super Speed.
 * He is the 2nd largest Homunculus (The first being Envy in its 2nd form)

In the anime
Main Article: Sloth (anime)