Greed

Greed is a greedy Homunculus, nicknamed the "Ultimate Shield". He is able to rearrange the carbon in his body to make his skin as hard as diamond, thus making himself almost impossible to injure. As his name implies he is a very avaricious character, who likes living in luxury, surrounded by powerful minions and beautiful women. Despite his generally greedy nature, he is shown to honestly care for his subordinates. He also has a habit of flipping people off in the manga.

In the 2003 anime series

In the manga and 2009 anime series

(Source: Fullmetal Alchemist Wikia)