Reception
Often considered one of Overwatch's staple and most recognizable characters, as well as its most iconic support-class hero, Mercy has received a somewhat mixed response from both video game media writers and Overwatch players. A popularly used character in Overwatch, Mercy is "celebrated by general Overwatch fandom". Her impact on gameplay, however, particularly in the game's esports community has attracted criticism.
During the game's open beta she was the most played support-class character. Following her major revamp in September 2017, Mercy was found to be universally picked as at least one healer on a team in competitive play, and because these changes require her to be closer to combat, the concept of a "Battle Mercy" who mixes both healing with attacks gained popularity at higher-ranked play. Some criticized this change, and felt it was a sign that Blizzard was trying to cater the game towards the competitive players over casual ones; high-level players felt that Mercy was a "zero aim" character prior to the September 2017 revamp, making it easy for new players to learn, but subsequently, the character requires more decision making and choices that can be difficult to casual players to learn.
A Eurogamer article referred to her as "gaming's greatest healer." In his review of Overwatch, Phil Savage of PC Gamer, expressed, "I particularly love how varied the movement is between characters," praising Mercy's glide ability and citing Mercy as "the perfect example of how every aspect of a character can, in the best cases, support a specific style." Savage elaborated, "alone, she's vulnerable and slow – easily ambushed and dispatched. But, with line-of-sight to a teammate, she can spread her wings and fly towards them. It's fun to do, and also reinforces the symbiotic partnership between healer and healed: Mercy needs her teammates as much as they need her. It's masterful design."
Despite being a popularly selected character, both media writers and players have noted success and enjoyment playing Mercy being largely dependent on the capabilities, attitudes, and competence of the player's teammates. Nathan Grayson of Kotaku called playing Mercy a "crapshoot" due to this. Mercy has also been cited as often present in discussions of player discontent with the game's balancing. Edwin Evans-Thirwell of PC Gamer wrote that Mercy was "patient zero" in the conflict of the original game's competing demands. Her impact on gameplay has garnered scorn from the Overwatch player base, both in the original game and its sequel, with some considering her damage boosting abilities toxic to game's balance. Tyler Colp of PC Gmmer wrote that "she is often the scapegoat for the shooter's balance issues, a healer who many players point to as the parasite leeching away Overwatch's competitive integrity."
Her Resurrect ability was considered "unfair" by some players, and due to it being able to cause such a considerable impact on the flow of a game, Kill Screen's Joshua Calixto referred to Mercy as "the most terrifying character in Overwatch." In professional play, such as the Overwatch League, some have argued that Mercy's Resurrect ability was still too much of a game-changer in these competitive matches; this concern persisted even after Mercy's September 2017 rework. Damian Alonzo for PC Gamer said that strategy for competitive Overwatch is generally about achieving a player advantage, which could be achieved with an early kill and which can snowball into greater advantages throughout the match, but Mercy's Resurrection completely undoes that advantage, nullifying such early kills and without any consequences. PCGamesN's Ben Barrett also said that because Mercy can undo the effects of short-term gain strategies like flanking with Resurrection, these strategies become futile, and resorting to more standard attack patterns slows down the pace of the game.
In the week of the game's launch, IGN noted Mercy as among a shortlist of characters "more popular than others when it comes to fan art." Her "Witch" skin for the game's Halloween-themed event was noted by Polygon to be extremely popular with Mercy players. A Mercy voice line used in a themed-event mode was not additionally paired with the Witch skin. Fans were able to successfully petition Blizzard to further include the voice line in-game with the skin equipped. In addition to fan art featuring the skin being made, some players changed their desktop background to the game's official menu screen featuring Mercy in the skin. Actress Amber Heard was reported to have spent two months designing her own Mercy cosplay for Elon Musk, after he told her she resembled the character, his favorite in Overwatch.
Mercy has also been cited as a commonly picked character in the healslut community, which engages in dominance and submission roleplay both in-game and through external means.