Alternative Character Interpretation: Judas in the manga is more emotive than his game counterpart and more prone to outbursts of anger, flat out attacking Elraine when she attempts to expose his identity.
Angst? What Angst?: Kyle's father was killed in front of him and his mother was crippled. He's sad about it, but doesn't seem to mind too much even when he remembers. Averted with Loni, who does remember and is upset about it, and with Harold and Judas, who both lose loved ones but just don't show their sadness too openly- Certain skits do show they're still pretty sad about their losses.
Complete Monster: Barbatos Goetia, a former member of the Er'ther Army, sold out his people to the Aetherians during the Aeth'er Wars so that he could be on the winning side. Due to the scale of the atrocities he committed, Barbatos's name was removed from history altogether. Following his resurrection by Elraine, Barbatos acts as her personal assassin, going after the heroes who saved the world from the resurrection of the Aethersphere and the superweapon Belcrant. In order to kill two of these heroes, Stahn and Rutee, Babartos uses a little boy as a hostage and threatens to kill him unless they drop their weapons. After they do so, Barbatos kills Stahn and cripples Rutee. Barbatos then tries to kill High Priestess Philia Felice and King Garr Kelvin of Phandaria, the latter of which he attempts to kill after crashing an airship into the royal castle as a distraction. When he returns with Elraine to the past, Barbatos encounters Dymlos, the old enemy who had killed him, and, in revenge, kidnaps a girl who's in love with Dymlos to use her as a hostage to force the weakened Dymlos to duel him. Utterly self-centered, Barbatos's ultimate goal and obsession is to force history to recognize him as a hero, even as he commits every evil deed imaginable and has no comprehension of what true heroism is.
Crazy Awesome: Harold borders on this. During one skit, she offers Loni some home-cooked food. Loni (correctly) guesses that she's spiked the food with paralysing powder so that she can drag his body off for experimentation, and eats some of Nanaly's food instead. Turns out, Harold knew he'd come to that conclusion and switched the plates.
The full version of her last Mystic Arte, Crazy Comet, is this as well as a Game Breaker.
Demonic Spiders: Any Reaper or Ghost enemies, which like to teleport around out of reach (usually behind a Stone Wall type enemy) and cast high level magic. Even worse is that where you find one, you will find the other, and it is possible for encounters to comprise of only Ghosts and Reapers constantly casting magic at you and trapping you in a Cycle of Hurting.
The Egg and Cyclops enemies in Spiral Cave are both incredibly annoying for different reasons. The Eggs are annoying because they soak up a ton of damage and ruin your Grade, while the Cyclops teleport around out of reach to cast magic.
Nanaly Fletch may also be a minor version of this, appearing/announced for spinoff games first before Kyle even appears/get announced. She even appeared overseas first out of all the cast. (She appeared as a cameo boss in Tales of the Abyss.)
Game Breaker: All magic in this game is overpowered compared to melee (according to Word of God, to encourage cooperative play), but Harold's full Crazy Comet spell is so insanely powerful the full version has to be showcased on bosses because the usual enemies won't survive long enough for the whole thing. The last stage heals your party after dealing high thousands of points of damage. It's only balanced by requiring a lot of TP to use (you're guaranteed to have to use a TP restoring item on her to use it) and only being unlockable on the second playthrough of the game. In later games, the spell is turned into a proper Mystic Arte, requiring you to be in overlimit to activate it.
The Title Glitch done properly will allow every character's stat growth to go through the roof, effectively removing every character's weaknesses. (Fast Loni, Beefy Judas, Quick Regenerating Mana Harold)
Good Bad Bugs: The Title Glitch, which done properly boosts characters' growth patterns significantly and nullifies their weak stats.
The summon glitch allowing Nanaly to summon Efreet and Undine, giving her access to two more hi-ougis.
Growing the Beard: Despite some mixed reactions to some story elements, this game is the first to introduce two of the franchise's staples- Grade and the Grade Shop for use on a New Game+. It also included a polished (though still slightly unusual) Mystic Arte system.
Inferred Holocaust: With Elraine creating several Bad Futures, including one spanning a thousand years in length with only three surviving cities, millions of people would have been erased from existence. This is retconned in the end, but it doesn't make it any less horrific.
It Was His Sled: The fact that it is obviously Leon beneath that mask has been lampshaded and parodied quite a bit. Here are afewexamples.
Heck, some dramas treat this as a Paper-Thin Disguise. one good one was when Stahn saw Leon (as Judas) and greeted him as Leon.
Love to Hate: Barbatos Goetia. He's a horrific villain, but also a very over-the-top and entertaining Large Ham, especially in skits. People don't soften the evil things he's done, but love him for his vileness and intelligence.
Romantic Plot Tumour: Some people feel Kyle and Reala's romance plot, while well-developed and quite tragic, took the spotlight off of the more interesting side characters, leaving them there for gameplay and comedic purposes rather than any story significance starting in the third part of the game.
That One Boss: Damn you, your freezing aura and your 100% deflect ability, Elraine. You only really have Loni for healing and it doesn't help that his AI tends to run in and get knocked back. Any time you close in on her, she'll freeze your combos dead on track.
Barbatos, the second and third time you fight him. Especially frustrating in the latter, because at around half-health he starts countering any offensive spells with one of his own, which is the only really effective way to damage bosses in the game.
Fortuna could also be considered this, simply because her fight takes so long.
Harold may be a minor example, as she only joins the party late in the game and her arc ends fairly abruptly with her brother's death. She does get a few skits afterwards (and one is a Crowning Moment of Heartwarming), but for the most part afterwards she only serves for exposition and comedic purposes. And to have a full-out mage.
They Wasted a Perfectly Good Plot: Many plot threads, especially near the end of the game, are quickly glossed over, such as the budding friendship between Harold and Judas over similar ruthless ideals and losses of people close to them, the revelation that Stahn was Dead All Along, with Kyle witnessing his father's death, Phillia possibly recognizing Judas, the Stable Time Loop created by Chaltier's sacrifice (which causes some timey wimeyFridge Logic with the game's ending taken into account) and anything to do with Nanaly and Loni that didn't involve each other to instead focus on Kyle and Reala's relationship. While the development was good to avoid any string strangling that some Tales games suffer with official couples, that's a lot of glossed over material.
Tier-Induced Scrappy: Nanaly. Only one mystic arte, primarily focused on attacking, in a game where magic is considerably more buffed compared to others...people tend to ditch her when Harold comes along. A rather odd example, since Nanaly is actually beloved character-wise.
Uncanny Valley: Reala is a stick figure. Even with this game's art style, she looks weird. Her dress also makes her legs look much longer than they actually are and her torso look much smaller than it should be. This extends to even cameo appearances where she looks out of place, especially in her cameo for Tales of Graces where she looks like a ten year old girl. There's also the issue of her skin tone being oddly pale with dark lips. She's supposed to be an example of Raven Hair, Ivory Skin but comes off as more of an Eerie Pale-Skinned Brunette combined with the obvious thinness.
The Woobie: Everyone in the party has their moments of woobiedom, but Reala and Nanaly both go above and beyond:
While Reala might not be well-liked, it's hard to deny she doesn't at least gain some Woobie points through the course of the story. She's created with a huge disadvantage compared to her Dark Messiah counterpart, initially cannot find the hero she needs to prevent Elraine from creating a Terminally Dependent Society, and during the course of her journey falls in love with a boy who decides to kill her creator, the only person keeping her alive. She doesn't say anything to try to reduce the pain Kyle would go through as a result of this, only for said counterpart to reveal both the truth of how she was created and that she will die with glee. While she does manage to come back to life in the end, she had no way of knowing survival was possible, and fully expected to be erased from existence.
Nanaly grew up in an orphanage with her brother, who got sick. Elraine offered to save his life, but only if they accepted brainwashing and having their free will removed entirely. Her brother died and she was left alone raising a bunch of orphans. Then, when she joins the party to fight Elraine, she gets put in a Lotus-Eater Machine where her brother's alive, only to be told he's not real. Then she has to reject her brother while he screamed and cried that he was real and didn't want her to leave him. Ouch.