An Orange Lantern Ring is powered by avarice, or greed. The wielders of the Orange Power Rings are covered in a deeper aura than members of other Corps. However, due to the nature of greed, only one being can wield the Orange Ring at once, any more would cause infighting among the Corps members as they'd be unable to share the power.
The current holder of the Orange Ring is Larfleeze, also known as Agent Orange. As there is only one Orange Ring and one Orange Lantern, the Orange Ring's power capacity can reach 100,000%. Thus, Larfleeze commands a powerful army by controlling constructs made from the Orange Light of Avarice.
These constructs were once living beings. After they are killed, the Orange Lantern Corps' standard protocol goes into effect and the Orange Light of Avarice consumes and steals their identity transforming them into a demented version of their former self, a mindless beast carrying out Larfleeze's orders, and they become the newest member of the Orange Lantern Corps.
Naruto Lanterns

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Green Lantern Credit to:

I suppose that Agent Orange is named for that wretched defoliant America used in Vietnam that kills everything, or makes you wish you were dead.