This character is a pretty old staple in fiction. This characters claims to have the skill to see past, present and future events based on the position of stars and planets, often using big heaps of Symbolism to link characters and events with astrological bodies and movements. They're a type of Fortune Teller that uses telescopes, star charts and zodiac's rather than a Crystal Ball or Tarot cards. Typically they're a Phony Psychic in modern non-fantasy stories; the astrologer is usually a fake, whether they will admit it or not, and whether they sincerely believe in their own powers or not. If they can actually divine the future through some form of Ritual Magic or Psychic Powers they're effectively a Seer, and they may Invoke the Phony Psychic trope as a cover for their real psychic powers.
Astrologers can be good guys, neutral, self-interested or evil. In fact, a story may have two Astrologers who engage in Scry vs. Scry to see which can affect their vision of the future. Just like a Tarot-based divination is open to interpretation, the Astrologer may anger clients when they wrong interpret predictions or have unfavorable fortunes. This especially true when they serve a villain who may kill them for the failure or as bearer of bad news.
The astrologer may use the Western Zodiac or the Eastern Zodiac, or instead substitute a wholly new astrological system of meaning. This last one is especially common in fully original fantasy settings. If they do use a zodiac of some sort, they may also happily engage in matchmaking, whether they're asked to or not.
The Astrologer is not to be confused with an Astronomer; the latter studies the stars and the former attempts to use them to explain things on earth.
Compare to Heaven Above, which describes the connection between the divine and any celestial body that flies across the sky, though originally there was no difference.
- In Moribito: Guardian of the Spirit, the primary mystical advisors to the Emperor are skygazers and astrology is a part of their divination process.
- In Sailor Moon, Nephrite uses astrology to locate humans nearing their peak energy production in order to acquire large amounts of energy for the Dark Kingdom.
- Red Sonja: Emperor Samala seeks Plaitius, the greatest stargazer in the world, to use astrology to read his horoscope. Unfortunately Plaitius is actually an indignant astronomer.
- Astrologette of Raven Child's The Smurfette Village series is the female Smurf version of this, who uses tarot cards to see the future.
- Harry Potter:
- Centaurs have fairly accurate predictions this way. Firenze in particular is skilled enough to teach a class in it, but even he admits that it requires a certain knack that is hard to grasp. Astronomy is also part of the Hogwarts curriculum.
- Fourth year Divination is devoted entirely to Astrology, specifically on how the cosmos affects day-to-day life. Firenze says this is nonsense, believing such things to be well beneath the notice of the stars and planets.
- As the disc rests on the back of four elephants standing on a giant turtle which constantly flies through space, astrology is "cutting-edge research rather than, as elsewhere, a clever way of avoiding a proper job".
- The Unseen University Professor of Astrology briefly appears in The Light Fantastic, when Trymon asks him to cast Rincewind's horoscope and thereby establish his exact location. Most of it could come straight out of a newspaper astrology column ("Your lucky food is small cucumbers, watch out for druids"), except the end which is pretty direct. ("P.S. We really mean it about the druids.")
- Also from the Discworld is Wilf, the mysterious figure who writes the astrology section of the Ankh-Morpork Almanack, and may in fact be the God of Astrology.
- Tad Williams's Memory, Sorrow and Thorn series has astrological motifs, particularly the recurring Conqueror's Star. Also, the court of Nabban has an astrologer who makes very accurate predictions. Unfortunately, they're not very precise predictions.
- Mameha in Memoirs of a Geisha, a good guy, consults and follows her forecast very carefully.
- Gail Andrews in Mostly Harmless is an astrologer who gave advice to President Hudson and is confronted by Tricia Macmillan on the existence of a tenth planet. Her explanation is that astrology has nothing to do with actual stars and planets; they're just the arbitary source of a system of rules that gives you insight into people.
- Raymond Smullyan's Satan, Cantor, and Infinity, a book of increasingly fiendish logic puzzles, includes a dig at astrology. One portion of the book is set in the court of a king who has both an astrologer and an astronomer. The astrologer is an idiot who always lies, while the astronomer is a bright, honest person.
- In Stranger in a Strange Land, Becky Vesey is a prominent astrologer who both works for Senator Douglas' wife and is a friend of Jubal's. She ends up using her seeing ability to subtly direct people's actions in what she views as a beneficial way.
- Interestingly she's not really using astrology, and even points out herself early on that she just "senses" the truth and then makes up the astrology to fit; she learned her craft from a carnival huckster. Mike later explains that she intuitively groks things. She might be a reference to 1961 celebrity astrologers such as Jeane Dixon or Carroll Righter.
- Mama Sutra in Shea and Wilson's Illuminatus!, a seeress who can also tell the past — a lot more accurately than the historians can... she predicts Putney Drake's rise to the top in the criminal world, and she can also look back to a world in which the events of Tolkien's The Lord of the Rings actually happened....
- In The Malloreon, the Dal race studies many supernatural things, such as necromancy (as in summoning and speaking to the dead, not raising them as undead hordes) and alchemy, but the Seers are in charge of the civilisation. Blindfolded except when they look at "the Book of the Heavens", one of them takes the reigns of the conflict between the two opposing Prophecies.
- The engineer from Piers Anthony's Macroscope dabbles in astrology. Harold defends his hobby by pointing out that astrologers spent thousands of years refining their methods, and they were often the most highly educated people of their eras.
- Diana Thompson, in Pact, is a practitioner that claims the title of Astrologer. Her astrology, however, is highly adapted to the modern age, to the extent that everyone else (who rely on astrological texts at least a century out of date) have very little understanding of how she does what she does. She relies heavily on Post-Modern Magik, using skywriting equipment to create constellations in the sky over Toronto, allowing her to change the stars locally instead of just read them.
- In The Long Dark Teatime Of The Soul, The Great Gazanga is a newspaper astrologist who happens to be an old friend of protagonist Dirk Gently's and writes all predictions for Dirk's sign with the purpose of winding him up. "Virtually everything you decide today will be wrong," is a typical example, and the paper's circulation has declined by about 1/12 since The Great Gazanga took up his post.
- The Canterbury Tales: The Miller recounts a story of an absent-minded astrologer who walked straight into a cesspit while trying to divine his future in the stars.
"He saw not that."
- 7 Yüz: One of Metin's disastrous dates in "Biyolojik Saat" is a budding astrologer who seems far more interested in assessing his star sign (he's a Cancer) than getting to know him as an individual.
- Hieronymous, the villain of the Doctor Who story "The Masque of Mandragora", is an astrologer, whose study of the stars brings him into contact with the Mandragora Helix.
- Martin Trueman, the villain of The Sarah Jane Adventures story "Secrets of the Stars" is an astrologer, whose study of the stars brings him into contact with the Ancient Lights.
- Zirinka is an astrologer from the episode "Syzygy" of The X-Files. The episode takes place during a rare planetary alignment and the place multiplies its effect on local people. Zirinka is a snarker who outsnarks even Mulder and her scenes are hilarious.
- The main character of Friedrich Schiller's play Wallenstein employs one. Based on Real Life - at this time, many famous persons had their horoscope made. And even famous astronomers of this time like Keplernote side-worked as astrologers, if only to pay the bills.
- The protagonist of the 16th century Latin comedy "Morosophus", which was an extended Take That! against the playwright's contemporary Nicholas Copernicus, is a reclusive, foolish astrologer who predicts that a rain will fall that will make everyone mad. He thus resolves to stay indoors all the time so he can become the ruler of the madmen, and is rumoured to have a large book that's just sitting around collecting dust. Of course, he's regarded as being a complete lunatic by everyone else. Note that there is no evidence that Copernicus ever practiced astrology beyond the mandatory requirements he had to learn as part of contemporary astronomy courses.
- Quest for Glory II has the astrologer Abu al-Njun.
- Final Fantasy Tactics features the side character Orran Durai, who is an Astrologer who bears the overpowered ability Celestial Stasis.
- Final Fantasy XIV has the Astrologian job, a healing mage that uses Star Power and Cards of Power to cast spells.
- Fate/EXTRA has Rani VIII, who provides valuable information to the protagonist by reading the stars in Week 2.
- The Legend of Dragoon has Princess Lisa.
- Children of Eldair has Koe the Sorcerer, who is able to read someone's past, and presumably future, by reading the stars in his gazing pool.
- BIONICLE: in Metru Nui, Ko-Matoran scholars partly work as these. Nixie is a Ga-Matoran astrologer.
- The Dungeons & Dragons episode "Child of the Stargazer" doesn't feature an astrologer, but does feature the son of one, who is the titular child of the stargazer. On that note, the episode doesn't feature an astronomer, but it does reveal that Diana is one. She is also the titular child of the stargazer.
- On The Simpsons, a Treehouse of Horror segment follows Homer after his horoscope claims "Today you will die, and you will be complimented by an attractive co-worker." Both ultimately come true.