Just Vader's helmet, you say? This completely embodies the inner struggle of good v. evil (Light v. Dark Side) Anakin constantly has to live with, being the Chosen One. The high contrast photo is a metaphorically brilliant idea!
I really like both of these because A.) They are made for lower level encounters, and B.) Their abilities are unique but not so overpowered as to feel "Extra Special" The Wallow ability adds a little micro-managment, but still; so many home brew things out there start in the mid teens. I totally get the desire to make something memorable and tough, but sometimes I'd kill for a clever CR 3 Pumpkin Elemental or Rocktopus. Flavorful and different, but not ready to take your left ear off.