Stymphalides vividly remembers the words of the agressive [sic] and destructive god of war, Aries. "Above all, be free." Encouraged by the god's chaotic yet unbridled lifestyle, it decides to set out to live its own life to the fullest. To Hell with all those that hated and feared its presence! "Even if I'm felled by poison arrows, I will live freely until that very last moment..."
The Ornithes Stymphalides (or Stymphalian Birds) were a flock of man-eating birds which haunted Lake Stymphalis in Arkadia. Herakles' destroyed them as his sixth labour, employing first a rattle to rouse them from the thick vegetation of the lake, then shooting them down one by one with bow and arrow or a sling.
The birds may have been placed amongst the stars as the constellations Aquila and Cygnus, which sit on either side of Sagitta, the arrow of Herakles.
The Stymphalides were sometimes identified with the arrow-shooting Ornithes Areioi (Birds of Ares) encountered by the Argonauts in the Black Sea.
Source: Theoi Greek Mythology 
First seen during Battle Royale VIII.