Pharynx



"As I went back to the Changeling Federation, Thorax's older brother, Pharynx, knew that his younger brother was framed for the Silbervia Business Park by his enemy changelings, the Black Changelings (led by Queen Chrysalis), so he might join the harmonic side to avoid being framed so that he and his brother could lead the way for the metamorphosed changelings to resist the Gerasecian invasion."

--Su Ji-Hoon, Meeting Pharynx

Pharynx is a male changeling and the older brother of Thorax who is first mentioned in Triple Threat and physically debuts in To Change a Changeling.

In When the Cold Breeze Blows Away, when he know his younger brother who has been framed for Silbervia Business Park massacre by his enemy changelings, he started to join the harmony of Equestria that he will avoiding his being framed,so that he and his younger brother can lead changeling soldiers to resist Gerasecia's invasion