Two comic book characters who are sentient planets are Ego from Marvel and DC character Mogo, from the Green Lantern Corps comic books, an appointed member of the Corps.
This is a list of fictional living planets, planets in fiction which are said to be alive, and in some cases, intelligent. This includes worlds covered by a single immense organism (such as Solaris) or whose biosphere is composed of organisms which are linked into a hive mind.
en.wikipedia.org/wiki/List_of_fictional_living_planetsAcheron in the computer game Unreal 2, entirely covered by a single, sentient organism
Alcoreth in Nat Schachner and Arthur Leo Zagat's 1931 short story "The Menace from Andromeda"
Alyx, covering the eponymous planet except the poles in Murray Leinster's The Lonely Planet (1949)
Balfrost, a seasonally frozen planet whose permafrost is laced with a network of mycelia in Roger Zelazny's short story "Permafrost" (1986)
Chiron (often known simply as "Planet") in Sid Meier's Alpha Centauri
Dahak in David Weber's Mutineers Moon, a planetoid-sized battleship masquerading as Earth's moon
The Doctor Moon in the Doctor Who episode "Silence in the Library", a massive sentient computer made to look like a moon
Earth in Sir Arthur Conan Doyle's short story "When the World Screamed"
Ego the Living Planet, a supervillain in Marvel Comics, and its twin Alter-Ego
Erythro in Isaac Asimov's novel Nemesis
Eylor in RPG Rifts, a living world said to be the source of the magical Eyes of Eylor, living disembodied eyes of great power
Fairy in the novel and animated series Sentō Yōsei Yukikaze
Fannie Mae, a sentient star in Frank Herbert's novels Whipping Star and The Dosadi Experiment
Father, a creature that envelops a watery moon and absorbs other species into itself, from K.A. Applegate's The Ellimist Chronicles, part of the Animorphs franchise
First Sirian Bank in Terry Pratchett's The Dark Side of the Sun
G889, an Earth-like planet in the TV series Earth 2
Gaea, a sentient artificial space habitat in the Gaea Trilogy (Titan, Wizard & Daemon) by John Varley
Gaia in Foundation's Edge by Isaac Asimov
Gozmastar in the Super Sentai series Dengeki Sentai Changeman
House in the Doctor Who episode "The Doctor's Wife"
Id the Selfish Moon, who was once Ego's moon in the Marvel Comics universe
A planet in the 2015 film Infini, revealed to be entirely organic and predatory
Kathulos, a living planet that served Shuma-Gorath in Marvel Comics
The Krang, a moon-sized weapons platform built by the Tar-Aiym in Alan Dean Foster's The Tar-Aiym Krang
Mellagio, a sentient planet, first created in the universe of the Genesis Rising: The Universal Crusade video game
Minds, in Iain M. Banks' Culture series, sentient, hyperintelligent machines in some inhabited planets
Mogo, from the Green Lantern Corps comic books, an appointed member of the Corps
Ōban, a living (though not quite sentient) planet in Ōban Star-Racers
Pandarve, a goddess planet in the Storm comic books
Petaybee in the Petaybee Series (Powers series) by Anne McCaffrey and Elizabeth Ann Scarborough
Phaaze, an evil sentient planet in the Metroid Prime video game series
Planet, the setting of Sid Meier's Alpha Centauri
Primus/Cybertron in the Transformers multiverse
Primus, a planet from the TV show Ben 10 Alien Force
Planet Remina from the Junji Ito manga Hellstar Remina
Scub Coral in the television show Eureka Seven
Safehold, the planet in the Safehold series of sci-fi novels by David Weber
Solaris, a planet in the eponymous novel by Stanisław Lem and 1972 and 2002 films by Andrei Tarkovsky and Steven Soderbergh, covered by a sentient ocean
Torajii in the Doctor Who episode "42"
Thallon in books 1–4 of the Star Trek: New Frontier novel series
Triton, a living planet in the book Triton is a Planet's Name (Triton Ekti Groher Naam) by Muhammed Zafar Iqbal
Unicron in the Transformers multiverse
Worm Planet in The Power Twins by Ken Follett
Wormwood in RPG Rifts
Yggardis the Sorcerer Planet, from DC comics
Zonama Sekot, a living world in the Star Wars expanded universe
Planet Janet and her moon, Maurice, in the animated TV series "Wander Over Yonder".
Brethren Moons from the survival horror game Dead Space.
Star dream/Star dream soul OS from the game Kirby: Planet Robobot(series)|Kirby]] is described as a sentient planet
The Balmera, a planet-sized creature in the series Voltron: Legendary Defender.
