A friend of mine was an odd character - generally OK, but when he got out-of-hand, things would escalate very quickly - he was generally known as Nightmare Neil.
He had, though, the benefit of the fact that English coppers generally have little knowledge of the general local population, apart from their own circles and a few habitual criminals.
This meant that Neil, who also had a capacity to look totally innocent, no matter what he had just done, was often taken home in a cop car, as the chance of him interacting with one who had dealt with him before was practically zero.
This led to us referring to them as his Blue and Yellow Taxis.
He also had a magical accuracy with a snowball - no power, but he would always hit you - he would stare at you with glazed eyes and, as soon as you decided to move, the snowball would appear at your new location and hit you in the face.