I gave human Vlad a much more casual look to make him seem more approachable for the purpose I had in mind for him. A Packers sweater and a pair of khakis to show he's still kind of a geek. Plasmius's outfit is camped way up from his original design. He has a jabot, waistcoat, and epaulets now as a way to show he's more style over substance whereas Danny's design is more about practicality.
The third design on the far right isn't from anything in the show but rather something from my own re-imagining of the series. In short, it's a fake ghost form he constructed to show to Danny to earn his trust and manipulate him. All the colors in this design are pulled from Danny's Phantom palette much like how in some fiction, shapeshifters can only look like things they've already seen before.