He depicts Adam of Brescia faking money, the liar Sinon and the false accusing Potiphar's wife. He bluntly disapproved of these falsifiers and state that these things don't go unpunished so we should cleansed ourselves from our errors.
Dante portrays Satan as the king of hell thus another victim of torture. He rebelled against the creator and fell out of heaven. The form of Lucifer frozen at the center illustrates pride which is the very foundation of sin. As a result, he was stripped of voice and power and suffered his badness with eyes dripping with blood and tears.