I found this picture in the Szeged prison. Two aliens are fighting or just jumping next to each other. Note the other duplications on the picture as well: the two scorpions at the bottom an the two moons on the top. The alien monsters are the symbols of the invincibility, flexibility but also the moral justice. In the original movie Alien, the specie killed all the astronauts with moral failures, only Ripley survived. If we face such kind of urge in an inmate redoubled we can guess that he is a murderer. Which might be possible, because this picture was made in the Szeged prison where the long sentenced prisoners are held in Hungary.