Pharmercy

Pharmercy is the femslash ship between Pharah and Mercy from the Overwatch fandom.

Canon
Mercy was part of the original Overwatch team alongside Pharah's mother Ana. A picture of the original Overwatch team shows a young Pharah with the team. Meaning that the two knew each other at the time.

Fanon
The ship name was created after many gamers were using the two as a combo move. Once Mercy's ultimate was accessed, she could fly up and heal or boost Pharah, who would then have more powerful attacks. Instead of refering to them as "Pharah and Mercy", gamers would call them "Pharmercy" as shorthand.

Fanart and fanfiction shows the contrast between their professional and personal lives. The two clearly take their jobs very seriously, and fan works will show how they spend their offtime together and them taking comfort in one another.

On AO3 it is the most written ship for both characters, and the third most written ship for the Overwatch tag.

Fandom
AO3

Trivia

 * Although Mercy was on the original Overwatch team, she is only 5 years older than Phareeha
 * Mercy was likely a teenager when she joined Overwatch, just like several other members of the team
 * Both have the ability to fly