Characters / Keys to the Kingdom

These are some of the characters from Garth Nix's Keys to the Kingdom series and tropes that are associated with them.

This page is currently under construction. Any contributions are appreciated.

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Main Characters


Arthur Penhaligon

The protagonist of the series, Arthur was an average asthmatic who was about to die until Mister Monday tried to loophole the Will by making him Heir. Even half of Monday's Key was enough to save Arthur's life, however, setting him on the path to collecting all the keys and fulfilling the Will.
  • Ascend to a Higher Plane of Existence: At the end of Lord Sunday, Arthur becomes the New Architect.
  • Child Soldier: He's twelve when he gets drafted into the House's army in Sir Thursday, though he doesn't end up having to serve the century he was drafted for.
  • The Chosen One: Possibly deconstructed since he was chosen as he was about to die and Monday expected he would get the Key back.
  • Cool Shades: As the New Architect.
  • The Corruption: The more he uses the keys, the closer he gets to becoming a Denzien. Or so he thinks at first, but it turns out humans can't become denizens so he's changing into something else.
  • Expecting Someone Taller: Thanks to a 'Thesaurus' denizen he rescued from the pit in Book 2. From book 3 onwards, everyone shows disbelief at who he says he is just because he's not 10 feet tall, has a beard and isn't accompanied by a frog/bear hybrid.
  • I Just Want to Be Normal: Really wants to just go home and stop transforming into an immortal-but-completely-inhuman Denizen.
  • Ill Boy: He suffers from asthma as a plot point. Holding a Key alleviates the symptoms.
  • The Power of Friendship: Arthur has a habit of making friends wherever he is. It might help however that he says please to denizens, who are surprised someone higher than them actually says it. He gets a lot of extra help this way.


Suzy Turquoise Blue

One of the Piper's Children, and one of Arthur's few friends in the House.
  • Genki Girl: Very, very talkative and energetic.
  • Innocent Fanservice Girl: Has nothing against taking off her clothes around others.
  • Kid Hero: Well, not really. She's a 4 hundred-year-old woman with the mind and body of a young girl.
  • Nice Hat: A slightly squashed top hat.
  • Overnight Age-Up: In Lord Sunday's epilogue, requested of the New Architect given her actual age. She also calls dibs on being Lady Sunday.
  • Plucky Girl: The epitome of the trope.
  • Really 700 Years Old: Like most of the Piper's Children.



One of Arthur's friends from Earth, Leaf is largely the POV character for all the strange things that happen on Earth due to the chaos in the House.


Fred Initial Numbers Gold

One of the Piper's Children, serving in the Glorious Army of the Architect.

    The Will 

The Will/Dame Primus/ The Architect

The Will of the Architect, a sentient piece of magical legislation sent to the Trustees for them to carry out. Instead, they ripped it into seven pieces and imprisoned each.

  • Big Good: Not quite.
  • The Chessmaster: It was all her plan. All of it.
  • Embodiment of Virtue: Each part of The Will represents one of seven virtues. In order: Fortitude, Prudence, Faith, Justice, Temperance, Charity, and Hope.
  • Lazy Bum/Lawful Stupid/Obstructive Bureaucrat: Part 2, Prudence, refuses to acknowledge Arthur as the Rightful Heir without proper documentation. As such, they're forced to carry it around, while it does nothing but sleep.
  • Obstructive Bureaucrat: Insists on going through a ridiculously long agenda even though the situation calls for urgent action.
  • Have You Seen My God?: The seven parts of her were imprisoned and incapable of action for millennium after the Architect left and the House fell into decay.
  • Reasonable Authority Figure: Temperance is perhaps the most reasonable of the Will's pieces.
  • Supporting Leader: Does most of the actual leading of the various parts of the House off-screen while Arthur goes to free the other parts of her.
  • Too Dumb to Live:
    • Most of the individual pieces. Dame Primus is generally much better about this.
    • Part 4, Justice, attacks The Piper in negotiations.
  • Who Wants to Live Forever?
  • Winged Humanoid: Initially, but as more parts were added to her, they soon faded away.

The Trustees

    The Trustees as a whole 

The rulers of the House, who were meant to carry out the Will of the Architect. They refused to give up power, tearing up the Will and imprisoning the pieces.
  • Day of the Week Name: Each of the Trustees is named for a day of the week.
  • Hour of Power: The Accord between the Trustees forbids them from interfering with the Secondary Realms outside the day they are named after. Their Dawn, Noon and Dusk can only leave the House during their time of day.
  • Evil Overlord: All of them, to one degree or another (except Wednesday).
  • Seven Deadly Sins: Each of them now represents one of the seven sins, having been corrupted by the Will.
  • Statuesque Stunner: Their major status within the House grants them both attractiveness and physical height.


Mister Monday

The first Trustee, who suffers from Sloth.
  • The Atoner: Once Arthur takes the key away from him and heals his mind, Monday becomes a much better and more-helpful person.
    • Redemption Equals Death: Delayed, but present: he and Tuesday both get assassinated off-page by Dame Primus partway through the third book.
  • Brilliant, but Lazy: Quite calculating and clever in his machinations, despite wanting to just sleep all day.
  • Lazy Bum: Does nothing but sleep, although it's suggested he can communicate words with a flicker of eyelids.
  • Let's Get Dangerous!: When he finally steps into the fray, well, see Scaled Up below.
  • Save the Villain: Arthur heals his 'Sloth' affliction at the end of the book, resulting in him becoming cheery and less evil.
  • Scaled Up: Can transform into a massive serpent to attack.


Grim Tuesday

The second Trustee, who suffers from Greed.
  • Cool Train: Covered in spikes on the outside to stop denizens climbing on it, and is the only way to get in, or out, of the massive pit in the Secondary Realms. Also has an equally cool train station (Which Tuesday has to repair all the time because it keeps being degraded by nothing) copied from one on Earth.
  • Creative Sterility: Can create beautiful things, and combine existing things to make something new, but not from scratch.
  • The Collector: Has a tower filled with treasures, including The Mariner.
  • Greed: His deadly sin.
  • Lean and Mean: 7 feet tall.
  • Tricked-Out Gloves/Power Fist: The Second Key, in the form of a pair of gauntlets which can be used to create things out of nothing.
  • Waistcoat of Style: Sort of. He wears a leather one and nothing else above the waist.
  • Unusual Eyebrows: Well, one eyebrow. Both got singed off in an explosion of nothing but one gained sentience and helps out Arthur.


Drowned Wednesday

The third Trustee, who suffers from Gluttony.


Sir Thursday

The fourth Trustee, who suffers from Wrath.
  • Bad Boss: He spends a fair bit of his page time beating up his subordinates. And then there's his killing of the mind-controlled Piper's Children
  • BFS: His key, while it's in his possession.
  • Drill Sergeant Nasty: A particularly nasty one.
  • Hair-Trigger Temper: He shreds a map with a bayonet upon the mere description of the New Nithling's attack. However it's implied he was holding back, as the fourth part of the will was waiting for him to become angry enough to break free of his control.
  • Just Following Orders: Upon talking to Arthur for the first time in private, he makes it quite clear he does not plan to relinquish the Fourth Key or Will without a change in orders from Lord Sunday or his deputy, Superior Saturday.
  • Unstoppable Rage: It takes his three Lieutenants to hold him back while Arthur tries to get control of the Fourth key.
  • Villainous Valor: His incredible willpower and self-control is the only thing holding back the power of the Will, and it must be constant. It'd be almost inspiring if he weren't such a violent jerk.
  • Would Hurt a Child: Oh, yes. He decapitated two Piper's children in a row.


Lady Friday

The fifth Trustee, who suffers from Lust.
  • Drunk on the Dark Side: Her addiction to "experiencing."
  • Lust: Interpreted for a younger audience as an insatiable desire for the experiences and pleasures of mortal life, rather than, well...
  • Magic Mirror: The Fifth Key, which she uses to transport herself and her entourage throughout the universe and drain mortals of their memories.
  • Winged Humanoid: One of only a few Trustees to demonstrate the form — preceding members of the Court of Days either had charge of regions of the House where flight was inadvisable (Tuesday and Thursday) or were prevented from using wings by the nature of their afflictions (Monday and Wednesday).


Superior Saturday

The sixth Trustee, who suffers from Envy.
  • Big Bad: Except really a Disc One Final Boss.
  • Can't Catch Up: To Lord Sunday. He even mocks her for it by giving her glimpses of the Incomparable Gardens.
  • Envy: Being the second most powerful being in the universe is utterly intolerable to her not for the privileges that being the top dog would grant her, but because the thought of someone having it better than her consumes her.
  • Evil Sorcerer: Her full self-styled title is "Superior Sorcerer of the Upper House."
  • The Starscream: She's second in command within the House as run by the Trustees and spends the bulk of her resources attempting to reach the Incomparable Gardens and overthrow Sunday.
  • Time Abyss: As the first Denizen ever created, she is the oldest being in the Universe aside from the Architect and the Old One.
  • The Unfought: Arthur takes her down immediately in a very anticlimactic confrontation even though she was constantly made out to be the ultra-powerful chessmaster behind all the evil in the series.
  • We Hardly Knew Ye: Physically appears very rarely, though is behind most of the evil throughout the books.
  • You Gotta Have Blue Hair: Has electric blue hair.


Lord Sunday

The seventh Trustee, he suffers from Pride.
  • Affably Evil: He offers to let Arthur go free if he relinquishes his Keys to him, which will enable him to stop the flow of Nothing, and will not get involved in further intrusions on Earth. However, he does so whilst threatening to have Arthur's eyes removed...
  • Aww, Look! They Really Do Love Each Other: With the Mariner near the end of the book.
  • Dimension Lord: Why, it's even in his name.
  • Genre Savvy: Knows about Saturday's attempts to reach his tower, but doesn't care.
  • Pride: His sin. Which is why he didn't tell Arthur about Dame Primus' true motives until it was too late...
  • Satanic Archetype: Almost certainly intended to bring this to mind given his sin and position.
  • Voluntary Shapeshifting: Takes the form of a Piper's Child in order to fool Arthur.

Other Characters

    The Old One 

The Old One

The second oldest entity in existence, outpaced only by the Architect herself.
  • Chained to a Rock: A clock, with torture-puppets instead of cuckoos that rip out his eyes every day.
  • Eye Scream: It could be worse. Used to be his liver, as per the Shout-Out below. He almost lets it happen to Arthur instead, just to see if he's fallen far enough to let it happen for a moment's reprieve. He hasn't, but it's a close thing. After all, Arthur's won't grow back...
  • Good Thing You Can Heal: His eyes do regrow almost as soon as his daily torture is over. Unfortunately, that doesn't make it hurt less.
  • Shout-Out: To Prometheus.

    The Mariner 

The Mariner

Son of the Old One and the Architect, the Mariner explores the Secondary Realms as a sailor.

    The Piper 

The Piper

Another son of the Old One and the Architect, the Piper is best known for calling mortal children to the House. He was exiled into Nothing centuries ago.



An ally of Arthur's in the House.