Scorpio · by personality
Fourth Wing · Riders Quadrant
Rhiannon Matthias: zodiac sign and birth chart
Rhiannon has no canon birthday. The books never give one. Read from her personality, she's a Scorpio: the friend who stays loyal through the worst, practical, funny and quietly fierce. A Cancer Moon and Rising make her the one who keeps the squad fed and together.
- SunScorpio
- MoonCancer
- RisingCancer
- MercuryScorpio
- VenusScorpio
- MarsScorpio
SourceNo canon birthday: the books give Rhiannon no date. The chart is NEBO's take, read from her personality.
Birth chart
Rhiannon's chart at a glance
No canon birthday, so this is NEBO's take, read from her character.
- Fire0
- Earth0
- Air0
- Water6
- Mostly water. 6 of her 6 placements are water signs.
- About 1 in 24 birthdays get Rhiannon in the app's Fourth Wing world.
- Other Scorpios here: Xaden Riorson, Imogen Cardulo and Sloane Mairi.
NEBO's take
No birthday in canon. Her personality says Scorpio.
We ran Rhiannon through the same model that matches people to characters in the app, and looked at which chart gets her most often. It reads her as water first: loyal to the bone, with a Cancer Moon and Rising that look after everyone.
Canon
No canon birthdayNever given in the booksNEBO's take
Scorpio SunRead from her personality- Sun
CanonNot in canonNEBO's takeScorpio
Scorpio is loyal for life. She meets Violet on Conscription Day and stays at her side.
- Moon
CanonNot in canonNEBO's takeCancer
Cancer Moon looks after her people. She helps the other first-years and rarely complains about her own problems.
- Rising
CanonNo birth timeNEBO's takeCancer
No birth time in canon. First impression, Cancer style: warm, funny and practical, the one who saves you a seat at breakfast.
- Mercury
CanonNot in canonNEBO's takeScorpio
Scorpio Mercury says what matters. Funny and direct, she believes you can survive without losing your humanity.
- Venus
CanonNot in canonNEBO's takeScorpio
Scorpio Venus loves with a vow. A saved seat, help at the right moment, a word kept: that is how she says it.
- Mars
CanonNot in canonNEBO's takeScorpio
Scorpio Mars summons what it needs. Her signet pulls objects into her hands from across the room.
What canon does give: Violet's closest friend in the squad, who believes you can survive without losing your humanity. Scorpio is the answer: loyalty with no speeches.
How she shows up
Why she's like this
Scorpio is the sign of loyalty, depth and sticking by your people. Rhiannon hits it in scenes fans know, and NEBO's take fills in the rest of the chart.
CoreScorpio Sun
Instant best friend
She meets Violet on Conscription Day and becomes her closest friend in the squad.
Fourth Wing
In a fightMars in Scorpio
Pulls what she needs
Her signet is summoning: Rhiannon pulls whatever she needs into her hands from across the room.
Fourth Wing
FeelingsCancer Moon
Helps the first-years
Strong, funny and practical, she helps the other first-years and rarely complains about her own problems.
Fourth Wing
LoveVenus in Scorpio
Takes the lead
In Iron Flame she becomes squad leader.
Iron Flame
Your turn
Which Fourth Wing character are you?
Pick your birthday. Your Sun sign gives a first answer right here, then the app reads your whole chart.
Aries girls get Professor Devera most often. Aries guys get Xaden Riorson.
You and Rhiannon: Signs that speak different languages. Curious mix.
Taurus girls get Cianna most often. Taurus guys get Dain Aetos.
You and Rhiannon: Opposite signs. You see each other's blind spot.
Gemini girls get Violet Sorrengail most often. Gemini guys get Ridoc Gamlyn.
You and Rhiannon: Signs that speak different languages. Curious mix.
Cancer girls get Professor Devera most often. Cancer guys get Xaden Riorson.
You and Rhiannon: Same element, water. Easy chemistry, same pace.
Leo girls get General Lilith Sorrengail most often. Leo guys get Dain Aetos.
You and Rhiannon: Signs at a right angle. Friction, the useful kind.
Virgo girls get Cianna most often. Virgo guys get Sawyer.
You and Rhiannon: Signs that cheer each other on. Good team.
Libra girls get Violet Sorrengail most often. Libra guys get Bodhi Durran.
You and Rhiannon: Next-door signs. Different instincts, lots to learn.
Scorpio girls get Rhiannon Matthias most often. Scorpio guys get Xaden Riorson.
You and Rhiannon: Same sign. You'd get each other without trying.
Sagittarius girls get Imogen Cardulo most often. Sagittarius guys get Garrick Tavis.
You and Rhiannon: Next-door signs. Different instincts, lots to learn.
Capricorn girls get Cianna most often. Capricorn guys get Dain Aetos.
You and Rhiannon: Signs that cheer each other on. Good team.
Aquarius girls get Violet Sorrengail most often. Aquarius guys get Ridoc Gamlyn.
You and Rhiannon: Signs at a right angle. Friction, the useful kind.
Pisces girls get Quinn most often. Pisces guys get Liam Mairi.
You and Rhiannon: Same element, water. Easy chemistry, same pace.
That's your Sun sign talking. The app reads your Moon, Venus, Mars and the rest, and the answer can change.
Get my real Fourth Wing character→Chemistry
Who Rhiannon clicks with, and who she clashes with
Read from the charts on their pages. The plot may disagree.
Clicks with
- Imogen CarduloCancer Moon+Scorpio MoonMoons in the same element: they calm down the same way, no translation needed.
- Professor DeveraScorpio Sun+Cancer SunSuns in the same element: they want the same things and go after them the same way.
- Liam MairiVenus in Scorpio+Mars in PiscesVenus and Mars in step: the spark is real, friends or more.
Clashes with
Pick a side
Are you more Rhiannon or Violet?
Your birthday settles it. The app reads your whole chart and tells you who you really get.
Similar charts
Who else has Rhiannon's chart
Famous Scorpios with her placements
Their charts line up with NEBO's take on Rhiannon. A chart match only: none of them is connected to this page.
Frank OceanScorpio Sun · Mercury in Scorpio, Venus in Scorpio.jpg)
Anne HathawayScorpio Sun · Mercury in Scorpio, Venus in Scorpio
DrakeScorpio Sun · Cancer Moon, Mercury in Scorpio, Venus in Scorpio%2520(cropped).jpg)
SZAScorpio Sun · Mercury in Scorpio, Mars in Scorpio
Lee KnowScorpio Sun · Mercury in Scorpio, Venus in Scorpio
Joaquin PhoenixScorpio Sun · Venus in Scorpio, Mars in Scorpio
Rhiannon in real life
Jeongyeon is a Scorpio Sun, like our model. Rei (IVE) is an Aquarius and Kehlani a Taurus.
Characters like her in other worlds
Same chart pattern in our model, different universe.
Fourth Wing
Characters like Rhiannon
Closest charts first: shared signs, same elements.
Which Fourth Wing character are you?
Add your birthday and the app finds your Fourth Wing character, your quadrant and how close you are to Rhiannon.
Are you Rhiannon? Find your character→Questions
Rhiannon's zodiac sign: what people ask
What zodiac sign is Rhiannon Matthias?
Canon never says. The books give Rhiannon no birthday. By personality, NEBO's take is Scorpio.
When is Rhiannon's birthday?
It isn't given anywhere in the books.
Is Rhiannon a Scorpio?
By personality, yes: loyal, practical and quietly fierce. It's NEBO's take, not canon, because no birthday exists.
What is Rhiannon's birth chart?
NEBO's take: Scorpio Sun, Mercury, Venus and Mars, Cancer Moon and rising. Read from her personality, not from a canon date.
What element is Rhiannon?
Water. Scorpio is a water sign, and 6 of her 6 placements are water too.
Who is Rhiannon most compatible with?
By chart, Imogen Cardulo, Professor Devera and Liam Mairi. Cancer Moon and Scorpio Moon: they calm down the same way, no translation needed.
Unofficial fan page. Fourth Wing and its characters belong to their respective owners. NEBO is for entertainment.
NEBO is for entertainment and self-reflection, not medical, psychological or financial advice.
TermsPrivacyImpressumCelebrity birth chartsZodiac signsFandom charactersZodiac compatibility2027 HoroscopeCelebrity birthdays© 2026 NEBO LABS LLC