Dirge is one of the many Decepticon seekers present in the Transformers franchise.
Dirge was one of the several generic Decepticons that blindly followed Megatron in the original television show. It has almost become a "running gag" for the fearmonging Decepticon to either be killed or defeated easily, a good example is when Unicron eats him in the film. However, despite his deaths and wounds, Dirge always somehow comes back, being one of the few Decepticons to survive the events of the film and continued to follow Megatron, who was boosted up to an even stronger 'con called Galvatron.
After Starscream went rouge and became an immortal loner waging war on his former leader, Megatron, he used his supernatural spark to construct a small army of clones with fragments of personalities of him. As every clone had the personality of an exaggerated Starscream trait, Dirge's was greed. But Dirge was never appeared in the series and as Megatron destroys all Starscream's Clones in Endgame Part 1, Dirge was destroyed too (as he was an inert Clone).