Greed - As two very different beings sharing one body, it is only natural that the relationship between Ling and Greed be rocky at times. However, though they frequently struggle for control of their vessel, the two greedy beings seem to have come to a sort of understanding, with Ling willingly allowing the intruding Homunculus to commandeer his body freely in exchange for power and possession of the Philosopher's Stone while Greed sometimes turns a relatively blind eye to the few occurrences during which the prince forcibly regains control of his body. While Greed bonds with Ling over the prince's powerful ambitions and avarice, Ling slowly learns to look inside the Homunculus' soul to discover what treasures truly lie at the tim, trái tim of the monster's desire.