The Black Wheel Gang were a gang of necromancers feared by many and known for their leather attire.
The Black Wheel Gang originated from Knothole Island and was founded by the Bard Billy Greaser. They were in fact not Necromancers, rather, this was a rumour made up by the older generation who disapproved of their behaviour.
The Black Wheel Gang were also known for singing accapella lullabies in battle, some of which where known to cause woman to faint. Their attire was that of a leather jacket, jeans, boots, and Gordon's Solar Spectacles for his failed mission to the Sun.
They are also obviously based off of 1950's bad boy with Elvis style hair and attitude, the so called 'rebel with nothing to rebel against'.