Taurus Aldebaran (牡牛座のアルデバラン Taurasu no Arudebaran?) is one of the 12 Guardians of Sanctuary, with the Taurus as his destined constellation. He was the physically strongest of the Gold Saints of modern era. Unlike most of the characters, Aldebaran is often depicted as a friendly guy, laughing and being less serious in times of peace. He was a good friend of Aries Mu and with Pegasus Seiya (as this last is said in the anime adaptation of the Hades Saga, when Aldebaran sacrificed together with the other 11 Gold Saints to destroy the Wailing Wall).
In a flashback in the anime version of the Hades saga, he is shown to awkwardly accept the gift of a flower from an unnamed small girl, while Aiolia, Mu and other village girls from around the Sanctuary look on. Although Aldebaran followed the orders of the Pope, he was growing suspicious of his integrity and tested the Bronze saints during their invasion on the Sanctuary. According to Aries Mu, Aldebaran could have killed all of them if he used his true power, but Aldebaran answered that if his enemies were fighting so hard, then their beliefs couldn't be all wrong.
Having mastered the 7th sense, Aldebaran is able to fully control his Cosmo energy and make movements at the speed of light. This power allowed him to become one of the Gold Saints, the strongest class among the protectors of the goddess Athena. It is hinted that he achieved the 8th sense in the Hades saga, so he could freely fight in the Hades and aid the other Gold Saints. Aldebaran has displayed superhuman physical strength in Saint Seiya Episode G, being able to lift single armed a plate that was crushing two other Gold Saints. Between his techniques, he has only showed the Great Horn (グレートホーン gurēto hōn?) in which Aldebaran sends two waves of massive Cosmo energy toward his enemy. The offensive power of this technique is high enough to pulverize a warrior completely together with his armor.
In order to improve the power and strength of his Great Horn, Aldebaran keeps his crossed-arm posture throughout the series. As noted by Pegasus Seiya this is a strategy similar to iaijutsu: While in this posture, Aldebaran can instantly react to incoming attacks and counter attack them, so quickly that the enemy is unable to perceive the attack before Aldebaran crosses his arms again.
Aldebaran has also shown the ability to create minor illusions like he did on his fight against Siren Sorento.