Scourge is Galvatrons implacable tracker and leader of his own cadr of huntsmen the deadly Sweeps. He was created by Unicron from the remains of a dead Decepticon. Immensely powerful like all the Unicronian Decepticons arrogance is his only true weakness. Despite being quite powerful in his own right Scourge generally acts as a near subordinate to Cyclonus and despite his leadership of the Sweeps is generally content to take orders from others. Scourge tends to grumble and complain a bit a habit sometimes shared by his Sweeps. Source: Transformers Wiki