Cops Flamers are enemies that appear in Riot.
Wielding a deadly flamethrower, these enemies will attempt to close the distance with the player in order to burn them.
This is made even worse by the fact that they are completely impervious to damage from the front. To kill them, you'll need to aim for their head or the napalm pack on their back. However, do not get to close while doing this, as they explode on death.