- Jacob Taylor was mostly ignored by players in Mass Effect 2, being considered a bland Master of None with a shallow and cheesy romance route who refers to Shepard as "the prize". The Narm Charm of his romance route is actually the entire foundation of his fandom. A common complaint is that the player isn't allowed to really know him: all efforts to understand his Hidden Depths are met with brush-offs or even outright hostility. Come Mass Effect 3, he's the only romanceable character in the series who actually cheats on Shepard. Knocking up another woman and not even trying to get in contact with Shepard in the six months she was incarcerated. This did not impress the fans, to say the least.
- He took much of The Everyman characterization that Kaidan had from the first game, combined with some Tier-Induced Scrappy. But Kaidan was still warm in personality, had a charming romance with Female Shepard, and even some Ho Yay with Male Shepard, while Jacob was cold and standoffish, even moreso than the suppose Ice Queen Miranda. Moreover, when Kaidan returned, he was Rescued from the Scrappy Heap with better gameplay balance and a relationship based on the deceptions of the second game, Jacob's story was less about him than it was about the supporting characters he was with. The story was barely any different if he didn't survive the suicide mission. And of course, he cheats on Shepard.
- Diana Allers of Mass Effect 3 seems to be getting quite a bit of hate for a variety of reasons. Her inclusion being considered blatant pandering to IGN (she's modeled after and voiced by one of their writers, Jessica Chobot), her Romance Sidequest (considered by many to be the most shallow in the series, and which does not even award the achievement), her bland voice acting, and what many fans perceived to be an exorbitant amount of effort put into her minor role. In addition, Mass Effect already had a beloved reporter character, Emily Wong, who was killed in the PR campaign leading up to Mass Effect 3's release.
- Morinth isn't too well liked as well, due to being a very vicious villain with little plot relevance whose only real purpose is for Samara's loyalty mission, and the odd bit of interesting game lore. Her Freudian Excuse for being a merciless killer was seen as rather weak as her sisters are also Ardat-Yakshi yet none of them chose to become mass-murders. Even moreso, her rationale of "being the genetic destiny of the asari" is complete hogwash, as an Ardat-Yakshii is sterile. It didn't help that Morinth never experienced any positive character arcs that would've made her more heroic (unlike the other Token Evil Teammates Zaeed, Jack, and Javik). Her status as a Scrappy is one of the few things fans on /v/ agrees on. Those who take her usually only do it to unlock Dominate as a class power and reload the mission to keep Samara on the squad.
- It's clear that Bioware felt that Samara was the "proper" choice while Morinth was the "wrong" one. Samara gets a sidequest involving her Ardat-Yakshii daughters. If you sided with Morinth however, she doesn't get to interact with her sisters, a generic justicar will appear in Samara's place. In fact, the only appearance Morinth makes in the entire game is as an otherwise generic Banshee that appears on Earth. You could easily kill her without even realizing its her since her only defining feature is the banshee has Morinth's name.
- Judging from Bioware forum, it seems that the third game has got Ashley Williams out of her Base-Breaking Character status but not in a good way.
- Before the third game, it seems that the Virmire choice that forced the player to choose between her and Kaidan seems to be in her favor as most players declare her to be both a deeper character and better for gameplay reasons. However, her appearance in Mass Effect 3 has caused a quite number of players, some of them her fans or people who disliked both characters, to either choose Kaidan in their save files, kill her off in the stand off with Udina, ship her off to get war assets or ignore her all together.
- Reasons for this ranged from her Unnecessary Makeover (her loose hair was deemed as both impractical for a woman soldier, and a bad attempt to copy Miranda); unsympathetic characterization (her Fantastic Racism underwent Flanderization, while her Hidden Depths with a love of poetry was ignored, and her theological discussion about the Lazarus Project was cut from the game). In addition, she had almost no interaction with any other non-Shepard squadmates.
- Making things even worse for Ashley is that her status as Mutually Exclusive Party Members made it inevitable that she will be compared to Kaidan, who was Rescued from the Scrappy Heap for many fans. One sticking point is that many fans felt Kaidan did a better job of articulating why he was having a hard time trusting Shepard. One particular moment that many call attention to is the climax of the Citadel coup. Where Ashley again calls Shepard a Cerberus lapdog, while Kaidan instead is questioning why Shepard is pointing a gun at a councilor. Likewise, finding Ashley drunk in the lounge, while funny, doesn't build her character, whereas Kaidan had a much deeper conversation about ex-Cerberus scientists, and wondering if the Illusive Man was ever a decent person before the indoctrination. Dialogue from the hospital scenes also made Kaidan feel a lot more contrite about what happened on Horizon, whereas Ashley seemed to brush it off (only for her rant about Cerberus during the coup. Gameplay balance was also hammered out after the first game (and a bug making Ashley's unique abilities not work properly) made many decide Kaidan was a better party member to pick. Even the Citadel DLC scenes with Ashley was criticized for being a ripoff of the Mos Eisley cantina scene rather than adding to her character.
- Kai Leng is a pretty Flat Character with a design that would look more at home in Mortal Kombat or Metal Gear than Mass Effect, but what really earns him Scrappy status is that until the last time the player fights him, every encounter with him is a Heads I Win, Tails You Lose situation in which no matter how handily the player beats him, Shepard is struck with Cutscene Incompetence and loses to him anyway. The fact that Leng then sends Shepard taunting emails adds insult to injury, coming across more like the act of an Internet troll than a serious villain.
- One could consider him a non-wrestling example of X-Pac Heat since the game does want you to hate him. The characters cannot shut up about how much they hate Kai Leng, more so than really any villain in the series aside from the Reapers in general. But the reasons they hate him will probably be different than the reasons the player hates him.
- The kid seen at the beginning of Mass Effect 3. Partially because of his poor voice acting, partially because he is seen as a cheap Expy of Newt and his death is a blatant attempt to arouse sympathy, and partially because his model is purposefully used for the Catalyst.
- Which brings us to The Catalyst. It's supposed to be sympathetic for wanting to stop organic life from being taken over by synthetics, but its chosen method (periodically wiping out organic life so they won't develop evil synthetics) is utterly nonsensical and makes little sense within the context of the series, not to mention making the much-vaunted Reapers look like idiots. On top of that, it's also responsible for the series's Gainax Ending, presenting Shepard with three arbitrary choices, none of which seem to actually solve anything and all of which end in the apparent destruction of civilization in the original version (originally the mass relays all EXPLODE which aside from permanently ending interstellar travel, would logically destroy any galaxy they explode in, as seen in The Arrival dlc in Mass Effect 2. The extended ending patch made it less apocalyptic by simply having the mass relays deactivate and fall apart, with the epilogues showing them being rebuilt.), when most players just wanted to kill the thing and be done with it. Leviathan somewhat acknowledges this and the criticisms of the Catalyst's Insane Troll Logic. Its existence is foreshadowed by the Leviathan, a member of the species whom the Reapers were modelled after, who explains that the Reapers are being controlled by a fundamentally broken AI, trying its best to work on faulty programming.
The Scrappy / Mass Effect
It's obvious that the players have had enough of these despised character's disingenuous assertions.