There could be some new original characters in his harem. For example, a time - traveler from the future who got stuck in Percy's time due to a time - rift. Also, a nymph who has a special connection to the concept of time and was drawn to Percy when he became the god of time. And of course, Hazel might also be part of it, with her ability to manipulate the Mist and her connection to the Underworld adding a unique aspect to the harem.
Thalia could be a member of the harem. Her fierce nature and her status as a daughter of Zeus would make her a strong presence. Then there could be a mysterious oracle - like figure who joins the harem. She has visions of the future related to Percy's role as the god of time and becomes part of the group to help him navigate the complex web of time - related events.
Annabeth could be a likely member as she has a deep connection with Percy already. Another could be Piper, given her charm - speaking abilities and her friendship with Percy. And maybe Hazel, with her unique powers and kind heart.
Annabeth could be one. She's been Percy's close friend and has a strong connection with him. Also, Piper could be a part as she has her own charm and abilities. And maybe Thalia, with her fierce nature.
Perhaps the story could start with Percy suddenly being bestowed with the powers of the god of time. As he adjusts to his new role, he attracts a group of people who are drawn to his power and charisma, forming his harem. Then, they all embark on adventures through time, facing challenges like time - paradoxes and villains who want to steal Percy's time - powers.
His old friends from Camp Half - Blood like Annabeth could be his allies. She would support him through the transition of becoming a god. Grover too, as his long - time friend, would be there for him. Also, some of the minor gods who have always been on good terms with Percy, like Hestia, might offer their help and guidance as he steps into his new role as a god.
In this kind of fanfiction, the Titans could also be antagonists. They might want to use Percy's power over time to their advantage. Maybe they think they can rewrite history in a way that would bring them back to power. Kronos, in particular, if he were somehow still a threat, could be a major adversary. He could try to manipulate Percy into using his time powers in a way that would benefit the Titans, like going back and changing events that led to their downfall.
Apollo could be the most interesting. Imagine Percy growing up with Apollo's gifts of music, poetry, and healing. He'd be this multi - talented demigod. He could use his music to charm monsters or his healing skills to save his friends in a more unique way than just using a sword. Plus, Apollo's flamboyant personality might rub off on Percy, making him a more colorful character.
Some minor gods related to the earth like Demeter could be allies. She has her own powers over the earth and could teach Percy some of her techniques. Also, the nymphs, such as the water nymphs and the tree nymphs, could be allies. The water nymphs could help with the water sources within the earth (like underground rivers) and the tree nymphs could help Percy take care of the forests. And let's not forget the pegasi. They could be used for transportation when Percy needs to quickly travel across his earthly domain.
In a 'Percy as god of time' fanfiction, perhaps Percy discovers his role as the god of time after some sort of strange encounter with an ancient artifact. He then has to learn how to control his powers. He could start by accidentally messing up the timelines, like making people age too quickly or events happen out of order. As he learns, he might use his power to give his friends extra time during battles, slowing down the enemies while his friends can attack more freely.
There could be other gods and goddesses. For example, Athena might be there to offer her wisdom to Percy as he navigates his new role. Poseidon, being Percy's father, could also play a part, maybe giving him advice on handling the power of a major god.
His mother, Sally, would surely be one of his allies. She has always been there for him. Also, Grover could be his ally as they have a long - standing friendship. Grover might see Percy as an even greater protector of the nature spirits now that he's a god.