In Christian demonology, the demon traditionally linked with greed is Mammon.
Mammon began as a Semitic term for wealth, money, or material possessions rather than as the name of a distinct demon. In the New Testament, Jesus warns that a person cannot serve both God and mammon. The wording treats wealth as a rival master, making the term a powerful image for misplaced devotion to riches.
Christian writers later personified Mammon as a demonic power or ruler associated with avarice. Medieval tradition connected him with the deadly sin of greed, and later literature turned him into a character who tempts people with luxury, profit, and worldly status. This development explains why quizzes often describe Mammon as the demon of greed.
A common misconception is that Mammon was always a separate pagan god of wealth. There is no strong evidence for a historical Syriac deity with that name. The figure is better understood as a personification that developed from a biblical word for wealth and became increasingly demonized in Christian interpretation.