Offhand Backhand: It's entirely possible to be kicking the crap out of the enemies in front of you with your melee weapon, then abruptly switch to your gun, fire off a shot over your shoulder to hit and kill the enemy running up behind you, and then continue to beat his buddies into submission.
Batman Can Breathe in Space: Wander through a Demon Door. Find yourself on a moon-like planet whose atmosphere changes with the press of a switch. Fail to die.
Be Careful What You Wish For: The Hero's definitely less than enthused by the realities of being King/Queen, judging by the way s/he slouches on the throne. The beginning of Traitor's Keep sees the Hero only being jerked out of his/her boredom with affairs of the state by an assassination attempt. Before that, s/he was falling asleep.
Improbable Aiming Skills: Anyone who can win a gunfight without even bothering to look at their targets most certainly qualifies.
Kicking Ass in All Her Finery: In The Masquerade quest, the female Hero is wearing a Pimped-Out Dress as she mows downs waves of enemies. And whether the Hero is male or female, you can feel free to kick ass in all kinds of fancy skirts and dresses.
Power Glows: If you use your magic enough, any tattoos you apply won't be black anymore. They'll be glowing bright blue.
The Quiet One: His/her dialogue is fully voiced, and this trope is well averted during the prologue, but for some reason the player character goes all quiet after that and very, very rarely speaks for the rest of the game.
You can also have other types of costume reference with some clothes and dye combinations.
Absence Makes the Heart Go Yonder: Assuming they survive the first ten minutes of the game, in the short time you're gone, they meet and fall in love with the proprietor of a homeless shelter/orphanage because they believed you were never coming back.
Always Save theLove Interest: Can be subverted or played straight, depending on whether or not you choose to save Elise/Elliot or the protestors at the very beginning of the game.
Bad Dreams: If you marry Elise/Elliot, s/he will say that s/he still has nightmares about the last day in the castle, and believes s/he always will.
Damsel in Distress/Distressed Dude: At the very beginning of the game, her/his life is in your hands. If you choose to save her/him, you have to rescue her/him again later, when s/he is kidnapped by Nigel Ferret's gang.
Disposable FiancÚ: Can be played straight or subverted. If you tell Elise/Elliot to come back to you, then they break up with Laszlo/Linda to marry you. If you stay silent or tell them to stay with Laszlo/Linda, they choose to get married to their current fiancÚ/e.
Green-Eyed Monster: Elliot shows hints of this if you marry him. Though, oddly, he does this if you give money to a beggar, yet not if you passionately kiss an unmarried lover in front of him.
Inter-Class Romance: Subverted in that no one cares, but Elise/Elliot actually isn't a noble despite being close friends with and possibly the spouse of the prince/ss. The character description lists her/him as "Middle Class".
Rapunzel Hair: Elise's hair is very long. And those curls bounce.
Red String of Fate: If you marry her/him, Elise/Elliot will occasionally make comments about how s/he thinks that s/he and the Hero were always meant to be together, and it was fate that brought them back together again.
Sadistic Choice: When the Hero confronts Logan about his intention to kill a group of protesters, Logan forces you to choose between Elise/Elliot and the protesters. This is one of the few choices which has no moral ramifications.
And just to drive the point home, Logan will have both the protesters and Elise/Elliot killed if you take too long to choose between them.
First Guy/Girl Wins: The above can be subverted if you tell Elise/Elliot to dump their fiancÚ/e and come back to you.
Satellite Love Interest: They're sympathetic to the plight of the people in Bowerstone and very fond of you, but other than that, there isn't much to their personality.
Stay in the Kitchen: Literally, you can find Elise in the kitchen if you marry her and after you move to the castle.
Of course, Elliot is always in the kitchen as well.
Survivor Guilt: If you choose to allow Logan to execute the protestors in exchange for sparing Elise/Elliot, s/he expresses guilt when you meet again over both the fact that s/he survived and the fact that s/he felt happy to know that s/he was going to survive, even through the horror of watching the protestors dragged away to be killed.
Claustrophobia: Walter suffers from this. It becomes a plot point later on when his debilitating fear leads him to become a target for The Crawler. It stems from being trapped inside a pitch black cave for three days with no hope of rescue in his youth.
Genre Blindness: Hey look, a swirling purple seal on a pit in the middle of an ominous cave surrounded by skeletons. I know! Let's pick up a book full of arcane symbols and read from it! Though, in his defense, there was no way either of them could have expected what they ran into in that cave. Plus it was kinda the only way out, so even if he did, he more or less didn't have a choice.
The Lancer: Although he doesn't particularly serve as your foil, he is your eternal sidekick and mentor.
If you're wondering exactly why, during the war, he and his unit sought shelter in a cave to hide from the enemy's army. The enemy did not follow them; they blasted the entrance, leaving him and his two surviving men trapped in absolute darkness for three days without food or hope of rescue.
Sabine is the King of Mist Peak and leader of the Mountain Dwellers. He is the first ally that the Hero recruits to overthrow Logan, on the condition that the Hero restore the mountains to him and his people.
Walking the Earth: He tells the Hero of Brightwall he will be doing this at Walter's funeral, feeling that military life is no longer for him. The Expanded Universe novel Blood Ties follows him on the begining of his journey.
White Sheep: He's the only brother in his family not willingly a criminal.
The commander of Fort Mourningwood, Swift is an old friend of Walter's who swears to support the Hero in their bid to overthrow Logan if they restore the integrity of the army. He is executed by Logan after his defection is discovered.
The player's personal adviser/butler upon becoming the ruler of Albion. His job is to remind them of their Royal Agendas for the day.
Miser Advisor: While he's completely loyal to the player, Hobson almost always tries to urge the player to take choices that puts wealth above all else. While it's understandable considering the situation of the kingdom, he goes beyond that and encourages the ruler to just be a greedy bastard. He's nothing compared to Reaver, however.
Mark, Jim, and Ben
Three novice wizards who enjoy playing Hallows and Hobbes and invite the Hero to play a game with them, causing the Hero to shrink down and enter the game.
Only Sane Man: Mark constantly acts as the voice of reason when Jim and Ben start bickering.
Aloof Big Brother: There's never any indication that you ever got along with him as your brother or that he ever treated you as anything other than an inferior nuisance. His opinion dramatically changes when you overthrow him.
Elliot/Elise does mention in the beginning of the game that he has undergone a dramatic personality shift within the past four years, hinting that Logan may have actually been a fairly decent brother before the Crawler attacked him in Aurora. The stress of ruling a kingdom likely plays into it as well.
Fascist, but Inefficient: Fear of the Crawler and trying to build an army doesn't explain some of the more inexplicably evil things he does, or why he didn't stop doing them once it became obvious he was driving the economy into the ground. It seems that regardless of whether or not he's actually evil, Logan is at least an incompetent ruler.
Molesting the Monster: He sexually harasses a woman who turns out to be a balverine. This ends poorly for him.
An Eldritch Abomination that ravaged the lands of Aurora, a civilisation across the sea from Albion. It desires to spread darkness and death to all corners of the world and its gaze is now fixed upon the hero's homeland. Its origins in Fable III are a mystery, as are its motives beyond destroying all life. In Fable: The Journey is revealed the creature of the Void and agent of The Corrupter. Its goal was to pave the way for its masters return from the Void.
Bigger Bad: In regards to Logan in Fable III. Though Fable: The Journey reveals that he is an agent of the series' Bigger Bad the Corruption and was merely a taste of things to come.
Giant Space Flea from Nowhere: He's clearly sentient, but no one knows who or what he is, why he's in Aurora, why he's fixated on Albion... he's just a great big evil thing coming your way, and no explanation is ever provided until Fable The Journey reveals his origins. He is part of the corruption that sprung from the illness Sir William Black recieved during his first encounter with Jack of Blades. He is in fact an agent of The Corrupter.
Kill and Replace: His ultimate plan: use Mary's essence-extracting machine to draw out your Heroic power, transform himself into a copy of you and then kill you so he can take your place and topple the monarchy from within. All the guidance and help he gave was his means of studying you so as to imitate you better.
Unless that's his way of saying it will be a military dictatorship. Puppet governments and all that. Considering his diary entries advocate the military's involvement so heavily, it's likely this is true, although he sincerely seems not to see it that way.
Professor Ernest Faraday
Expy: Faraday's armoured suit and Logan wanting to use his inventions for war may be a reference to Iron Man.
Evil Genius: Subverted - he never wanted his creations to become war machines.
Fatherly Scientist: He loves his robots so much he'll go to the mat for them in a suit of Powered Armor, despite being quite elderly. His statue even depicts him holding a robot in his lap like a grandfather with a small child.
Mad Scientist: In the form of an army of robots and single-handedly inventing Albion's industrial age, somehow.
Reluctant Mad Scientist: But he ultimately handed over the reigns of his company to Reaver and retired to build what amounted to an amusement park. His creations weren't meant to be weapons - all he ever wanted was to make everyone happy and safe, robots included.
Shout-Out: To chemist and pioneer of electricity Michael Faraday.