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Julio once lived as a straight man and was married to a woman named Adriatica Vel Johnson. He later embraced the gay lifestyle, and he and Grady became partners and moved in together. They had a three-bedroom apartment, but at one point had lost their third person and were looking for a replacement roommate.
At that time, Julio and Grady met Homer. Homer had found a note that Marge had written before they had gotten married where she said she wasn't sure she wanted to be with him. Upset, Homer moved out of the house and went looking for a new place to live. He wandered into Springfield's Gay Neighborhood, saw that Julio and Grady were looking for a roommate, and promptly moved in with them. Eventually Homer moved back home when he discovered that Marge really loved him after all.
Some time after that, Julio and Grady broke up and Julio married Thad, with Homer officiating at their ceremony. Later, however, Julio had an affair with Duffman. What effect the affair had on his relationship with Thad is not definitively known, but since Julio later admitted to flirting with a co-worker, presumably he and Thad are no longer together.
Julio is a professional photographer. He once took pictures of Marge and her friends, who were making a sexy history-themed calendar for a charity fund-raiser. Marge was reluctant to show any skin at all, so Julio had her drink some wine to loosen up. The wine had a greater effect than Julio had intended, as Marge ended up revealing far more than she had planned. Julio's pictures of Marge's pin-up poses became the talk of the town.
In addition to photography, Julio works as a hairdresser at Hairy Shearers, where Marge Simpson is one of his longtime customers. When Marge came in for an appointment and told Julio about finding her first gray hair, Julio confessed that he had been secretly dyeing her hair blue for years, so that she had never noticed any gray hairs before. To prove it, Julio showed Marge her gray roots beneath the blue-dyed hair, which shocked her.
Julio played the part of the angry king of Spain, who tried to destroy England with an armada of ships, but failed.
 Behind the Laughter