As noted in The Norton Anthology of Western World Literature, "A Florentine named Ciacco, known only for his appearance here" (Puchner et al. 1617; 38 -1618; 6).

Ciacco is the only sinner in the third circle that talks to Dante and tries to get him to remember him and see his pain.

Dante describes, "Cerberus, a ruthless and fantastic beast, / with three throats howls out his doglike sounds / above the drowning sinners of his place" (1618; 13-15).

Dante claims, "His eyes are red, his beard is slobbered black / black, his belly swollen, and he has claws for hands; / he rips the spirits, flays and and mangles them" (1618; 16-18).

The Cerberus is a viscous three-headed dog monster that eats, mauls, and tears the bodies of the sinners while they are still aware of what is going on around them. The sinners lie in the sewage and wait for him to attack them. 

Dante responds to Ciacco with, "'The pain you suffered here perhaps / disfigures you beyond all recognition: / I can't remember seeing you before. / But tell me who you are, assigned to grieve / in this sad place, afflicted by such torture / that---worse there well may be, but none more foul'" (1619; 43-48). 

King Louie from Jungle Book

Joey Chestnut - Professional Hot Dog Eater

Mr Krabs from Spongebob Squarepants

Donald Trump - POTUS

The punishment that we have decided for the dictators in our circle of  is an ironic metaphor to the lives they lived on Earth. Their circle of Hell will be set in a government setting as they were used to when living. However, each former dictator will be given equal control and power of the Government forcing them to fight constantly and wear down on each other since they are used to being in complete control and having no one to answer to. Eventually the dictators will resort to torturing each other to try and gain the top spot in the government hierarchy.