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Taurus Aldebaran never fractured any of his bones before the Poseidon saga.

If Taurus Ox lived in a modern world (outside of the sanctuary), he would be a Physics professor.

Taurus Harbinger is color blind (triantopia/can't see blue)

Taurus Hasgard did calligraphy when he was younger.

Taurus Francisca didn't believe in ghosts until meeting Sage and Hakurei.

Taurus Teneo has little to no contact with his biological parents because they are strictly christian and refused to accept that Athena actually existed.

Taurus Aldebaran has cursed exactly once during his fight against Tanngrisnir Heracles. When the green menace tried to tell on that experience to the other God Warriors, they laughed at him. Nobody ever believed him.

Taurus Ox has tea parties with his two besties and Cardinale.

Taurus Harbinger never really celebrated hollidays like Christmas because of his past of poverty. So when he became the pope, he took his opportunity to "spoil" himself with these little Holliday things like the music and a tiny Christmas tree. (Headcannon taken from a fanfic on AO3 called "A Sanctuary Christmas" by KatarinaHighkick)

Taurus Rasgard is a master gambler. Even Aspros couldn't defeat him.

One time, Taurus Teneo was so sleep deprived that he ate an entire bouquet of demon roses. Thanks to Pefko, he didn't die.

After the underworld fairies incident, Taurus Francisca became Aeras "best friend", as in they would spar more often and talk more.

Taurus Ain watched "Winx Club" with Eulalia and Kogetsuki by the girls insistance. Kogetsuki ended up leaving mid season 3 because it "wasn't exactly her thing" but he and Eulalia stayed there. His favorite character is Flora while the Scorpio girl's is Stella.

Bonus:

1, 2 and 6: Rose, Propose and Kiss (Ain x Crematorio and Kogetsuki)

They got engaged and their little celebration went a little bit too well. . .

8: Valentine (AldeMu)

They are learning how to dance together.

Taurus Aldebaran's favorite Brazilian movie is "O Auto da Compadecida" and he made every gold saint watch it with him at least twice. Deathmask secretly loved the movie.

Taurus Ox complains a lot about Shion and Dohko being reckless, only to be outed as being worse then they were at their age by Odysseus, Izo, Shijima and Deathtoll.

When Taurus Harbinger became the Grand Pope, he thought the people of Rodorio and the Palaestra would disapprove of him because of his past alliances. He was then surprised to see them celebrating him becoming pope.

Taurus Rasgard gets motion sickness from the simple though of being in a boat.

Taurus Teneo reads a lot of romance books, like Frankenstein and Dracula in his free time.

Taurus Francisca is Harbinger's father. He got teleported to the future during a mission, had a relationship with a woman and got teleported back without being able to bring her with him, even if he wanted to.

Taurus Ain babysat for Yoruhime's family when he was younger and the siblings used to love him. They played a lot but he stopped coming when he moved to the sanctuary. The only living person who knows/remembers that is Mayoi for some reason.

Bonus:

When your favorite character only appears twice so you have enough freedom to think whatever about him

For those wondering, it's him