Robotic ghost pirates
Robot pirate ghosts first appeared in the year 3040 (because of a time machine invented by George Lucas) after the dreaded pirate, Captain Blackstar, died after being shot by Dick Cheney. Since Blackstar was an 80% robotic being, his ghost had retained all the robotic components his living body had, thus resulting in him returning as a robot pirate ghost (because he was 80% robotic, was a pirate, and was a ghost!) Robot ghost pirates currently roam the Earth and can often be sighted near Detroit and areas near the South Pole.
Range and Weakness
Robot pirate ghosts come in many forms and many of them (including Captain Blackstar) have the ability to shape-shift to strike fear into their enemies, rivals, or anyone they plan on looting. Most robotic pirate ghosts also have a tendency to self destruct if they are in a car. This can give the enemy an advantage if surrounded or trapped by robot pirate ghosts to get rid of them. This will only work though if the victim of such a scenario knows of this fatal weakness.
When robot ghost pirates encounter a human, they will usually not be interested in interaction and will howl a hardy pirate-ghost howl at the human, in hopes to scare it away. In rare cases, the creatures have attacked and captured humans, taking them to their lairs spread across the sea bottom. No one is aware of what the ghost-pirates do to their captives beyond that point. Some robot ghost pirates can have rabies and will go on a rampage that can only be stopped by the elder robot ghost pirates.