There are Monsters among us

"Uh...Hah...Ugh." The weird creature runs down a tunnel, panting for breath. Suddenly, it came to the end of said tunnel and the sun's bright rays make his green eyes dilate against the sudden brightness.
UNKNOWN SECRET FACILITY
*WHIR! WHIR! WHIR! WHIR! WHIR!*
Warning sirens blare.
"Sir!" A blonde-haired woman called out. "Raptor-1 has just breached our holding cell!"
"He's used the sewer lines to escape!" A violet-haired woman added.