Dante is known as a "sexual deviant" and a terrorist. We know why he is known as a terrorist, though. So, since that mystery has been solved, I want to turn attention to sexual deviance. Could this translate to Lust? Notice how the default demons resemble women. Could they be representatives of Lust?
Lust is also the second ring of hell in the Divine Comedy. Dante, with his sexual deviance and all, might just be on the border of crossing into that realm and the mannequin-type enemies might symbolize this.
But why, then, do other demons appear? I'm thinking they simply just cross by later on.
Now, I am going to bring Limbo and Lust together.
In the Divine Comedy, Lust is bright and constantly windy, swaying you about. Could Limbo in DmC, constantly shifting and making you readjust, be Lust with a different name?