"I am old, Gandalf. I don't look it, but I am beginning to feel it in my heart of hearts. Well-preserved indeed! Why, I feel all thin, sort of stretched, if you know what I mean: like butter that has been scraped over too much bread. That can't be right. I need a change, or something."
― Bilbo Baggins (The Lord of the Rings)
"I am still my youthful years of one hundred and thirties thank you."
― Kureha (One Piece)
"I hate to admit it, but I am only a hundred and six."
― Liara T'Soni (Mass Effect)
"I'd rather not say this in front of His Majesty, but I'll have you know I've been alive for decades!"
"Hmph! Well, I've been fighting for this country for over a century!"
― Aisha and Castor (How a Realist Hero Rebuilt the Kingdom)
Though well over fifty years old, Laura Weathermill (Angel) has the appearance of a young woman.
Sir George (Ben 10) is well over a thousand years old.
Grandfather (Codename: Kids Next Door) has been alive ever since the 19th century in the exact same physical state, despite his aged appearance in the 21st century.
Jay Garrick/The Flash's (DC Comics) differing metabolism and connection to the Speed Force slows his aging.
The Flash's (DC Comics) differing metabolism slows his aging.
Due to having her DNA mutated into a plant-like capabilities basing on solar energy, Poison Ivy's (DC Comics) will live longer and aged slower than regular humans, as long as she maintain absorbing enough solar energy
Though chronologically in her late forties or early fifties, Miss Martian (DC Comics/Young Justice) is only sixteen by the Martian calendar.
Romulus (Marvel Comics) is at least several thousand years old.
Remus (Marvel Comics)
Mystique (Marvel Comics) uses her shapeshifting abilities to rejuvenate her cells, slowing her aging process dramatically.
Being over about 200 years old, Victor Creed/Sabretooth's (Marvel Comics) regenerative abilities slow his aging dramatically.
Being well over 200 years of age, Silas Burr/Cyber (Marvel Comics) retained the appearance and vigor of a man in his physical prime due to his accelerated healing factor, aging much slower than an ordinary human.
Born in the 19th century, James "Logan" Howlett/Wolverine's (Marvel Comics) regenerative abilities slows his aging dramatically, as he is over 100 years, yet still in his physical prime.
As a Half-Vampire, Eric Brooks/Blade (Marvel Comics) has a much longer lifespan than a normal human having been born in the early 1920s.
Thanks to the Infinity Formula, Nick Fury (Marvel Comics) remains in his prime despite chronologically being nearly 100 years old.
Due to the effects of the Super-Soldier Serum, Steve Rogers/Captain America (Marvel Comics) is unable to age and will remain in his healthy physical prime.
Due to the effects of the Super-Soldier Serum, Josiah al hajj Saddiq/Justice (Marvel Comics) is remains in his healthy physical prime despite being born in the 1940s.
Inheriting his father's healing factor, Akihiro Daken (Marvel Comics) retains the appearance of a young man in his physical prime despite being over 70 years old.
Wade Wilson/Deadpool (Marvel Comics) ages slower than the average human due to his healing factor.
Due to his time in the Lost Land, Turok's (Turok: Dinosaur Hunter) aging process has been greatly slowed.
Viltrumites like Thragg (Image Comics) have the potential to live for thousands of years and still be in their physical prime, aging slower the older they get.
Jenny Quantum (WildStorm/DC Comics) stopped aging once she reached adulthood.
Genryūsai Shigekuni Yamamoto (Bleach) is a Shinigami who was over 2,000 years old by the time he was killed.
Shinigami (Bleach) can live to be far older than Humans by default, though by how much seems to depend on how much more Spiritual Power they have.
Rukia Kuchiki (Bleach) is over 150 years old despite appearing to be a teenager.
Despite her youthful appearance, Retsu Unohana (Bleach) was one of the oldest Shinigami there is; being one of the founders of the Gotei 13 alongside Yamamoto.
Pure-blood Saiyans, like Vegeta (Dragon Ball series) have a slower aging rate than earthlings and part-Saiyans and staying in their prime for much longer.
Pure-blood Saiyans, like Son Goku (Dragon Ball series) have a slower aging rate than earthlings and part-Saiyans and staying in their prime for much longer.
Half-demons like Inuyasha (InuYasha) have a longer lifespan than normal humans, living over 50 years without aging past his teenage appearance.
Though over a hundred years old, Saya Otonashi (Blood+) stopped aging when she was biologically 16.
Though she has the appearance and personality of a young child, Nowi (Fire Emblem: Awakening) is over 1000 years old.
Hamon/Ripple Users, like Elizabeth Joestar/Lisa Lisa, (JoJo's Bizarre Adventures Part II: Battle Tendency) can preserve their vitality and youthful looks, and be more energetic even during old age.
Despite having the appearance of a pre-teen girl, Rurumo (Majimoji Rurumo) spent over 60 years in the magic/witch world jail and is at least 150 years old.
Despite her youthful appearance, Aqua (Di Gi Charat) is over 120 years old.
Master Son (Gintama) using Qi Gong to manipulate his lifespan, having lived in the battlefield for more than two centuries.
Doctor Kureha (One Piece) maintains an immensely healthy and robust constitution,which significantly reduced her aging process to the point she remain superhumanly strong at the age of 141.
Lao G (One Piece) uses Jio-Ken to store up the vitality of his youth, when unleashed he restored his constitution to his physical prime, completely negating any debilitating weakness of old age.
Yorl and Yarl (One Piece) are the world's oldest giants, both have lived far beyond a giant's average lifespan at the age of 344 and 345 respectively.
As a giant Hajrudin (One Piece) ages very slowly, though he appears to be a robust man in his prime he is actually 81 years old.
As a giant, Gerd (One Piece) is still well in her prime at 75 years old.
Dragons (Maid Dragon) have the same average lifespan as stars and other stellar bodies, making them seem almost immortal by comparison to the lifespan of humans and other species.
Gabriel Van Helsing (Van Helsing) has apparently been alive since the first century, yet is still in his prime.
Olaf Johnson (The Almighty Johnson) barely ages after becoming the reincarnation of Baldr at his 21st birthday, he already has about 20 children and at least 4 grandchildren.
Sycorax (Doctor Who) live for 400 years
Zygons (Doctor Who) can seemingly live for centuries.
Madame Gao (Marvel Cinematics Universe) has lived for over four hundred years, and despite her physical appearance of an elderly woman, she is a very strong martial art master.
Stick (Marvel Cinematic Universe) extensive meditation allows him to restore his physical health and vitality, giving him top physical condition despite age of ninety.
Satomi Ito (Teen Wolf) in the late 1940s...
...and over sixty years later.
Wookiees (Star Wars) can live to be over 400 years old.
Yoda (Star Wars) was 900 years old by the time he died of age.
As a member of Yoda's species, Grogu (Star Wars) ages very slowly, to the extent he's considered a toddler despite being fifty years old.
The Ryusoul Tribe (Kishiryu Sentai Ryusoulger) can age slowly and can live for over a hundred years.
Perhaps as a result of being stranded in the Realm of Darkness for 11 years, Aqua (Kingdom Hearts) has not aged a day and still appears to be in her late teens or early 20s.
Zora (The Legend of Zelda: Breath of the Wild) are age showers.
Though chronologically 19, Shelke (Dirge of Cerberus -Final Fantasy VII-) stopped aging at nine due to Deepground's experiments.
Though chronologically over a hundred years old, Liara T'Soni (Mass Effect) is barely an adult by asari standards.
Due to a contract with Shang Tsung, Erron Black (Mortal Kombat X) has slowed aging, still appearing in his prime despite being over 150 years old.
Though in her late 30s, Aya Brea's (Parasite Eve) aging process has been greatly slowed by the mitochondria in her cells, giving her the appearance of a woman in her early 20s.
All Ninetales (Pokemon) have a wondrous energy store in their nine tails that could keep them alive for 1,000 years
Due to the potent magic of the Genesis Spell, the Young Guardians cannot physically age past 18.
Tomiko Asahina (From the New World) has slowed her aging dramatically and lived for over 250 years by continually rejuvenating her telomeres.
Like all dwarves, Romilda's (Outbreak Company) aging is static, meaning that her appearance will not change from childhood all the way until she dies, thus making it impossible to tell exactly how old she truly is.
The Most Feared Species in Star Wars - The Anzati -Legends- - Star Wars Explained