The First creature hissed as it climbed out of one of the many ventilation systems.
Following closely behind were the Third & Second creatures, whom looked almost similar, the only differences were in the 'face'.

The First creature had somewhat of an actual face, but it was distorted in a way with gaping holes where his eyes should be & a slitted, black, drooling smile for a mouth. He was also covered in hundreds of tiny dots, many a vast ray of colour.

The Second  was merely a brute, tall, muscular, but the only feature that stood out from the white glow of his body was his jagged, sharp teeth lining his jaws. Jaws, teeth & muscle, truly a born-weapon.

The Third was the tallest, yet this seemed to be the only feature he had - since he was only a blank, white sheet, often blending in with the once white walls of the building, which were now sprayed with red. However, despite having none, his gaze seemed to trap anything or anyone in his sight.

The First chirped & coughed, getting the other two's attention as the First titled its head in the direction of an exploded wall. The grey wall looked broken, a large hole right in the centre with debris lying at the base of it. The Second growled & pushed aside to get a closer look.

The Third stood off, focusing on something else, someone he could still hear, faint but far away. Suddenly, he growled & turned to pierce the large hole in the wall, the other two soon followed.