Annabeth would most likely be his ally. She has been with him through thick and thin, and her wisdom would be invaluable as Percy becomes a god. Grover could also be an ally, using his nature - related powers to help Percy in different situations. Another possible ally could be Nico di Angelo. With his control over the dead, he could provide unique assistance, especially when it comes to dealing with the darker aspects of the godly world.
His mother Sally could be an ally in a way. Even though she is a mortal, her love and support for Percy could be a source of strength for him as he ascends to godhood. The centaurs from Camp Half - Blood might also side with him. They have knowledge of the old ways and could offer guidance. Additionally, some of the minor gods who have always been overshadowed by the Olympians could see Percy as a chance for a new order and ally with him.
In fanfiction, Percy might find allies among the forgotten heroes of the past. These heroes, who have been lost in the annals of mythology, could be resurrected or brought back in some form to help Percy. The sea creatures that he has befriended over the years, like the hippocampi, would surely be on his side. They could act as scouts or messengers for him. Also, some of the young demigods who look up to Percy might form a sort of 'Percy fan club' and become his allies, ready to fight for his cause as he becomes a powerful god.
His friends from Camp Half - Blood like Annabeth could be his allies. Annabeth is smart and strategic, and she would be able to offer valuable advice as Percy goes through the process of becoming a minor 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.
His mother, Sally Jackson, could play an important role as an ally. She has a strong will and has always been there for Percy. Also, Tyson, his cyclops half - brother, could be a powerful ally with his strength and loyalty. And don't forget about the Nymphs. Some of the water nymphs might help Percy since he has a connection to water.
First, Percy would have to overcome his own self - doubts. In fanfiction, this could be a major part of his transformation into a powerful god. He might be given a special quest by some unknown and even more ancient force. On this quest, he discovers secrets about the origin of the gods themselves. This knowledge empowers him. He then starts to show god - like abilities, like being able to teleport across the world instantly or being able to heal any wound. His new status as a god also makes him a target for those who oppose the new order he might be creating.
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.
The Cyclops Tyson could be an ally. He has a strong bond with Percy and his strength could be a great asset. In a fanfiction where Percy is the God of Light, Tyson could be like a protector of Percy's light - based temples or strongholds. Also, the sea creatures that Percy has befriended over the years might come to his aid. Since Percy has his roots in the sea and now has light powers, they could work together in a unique way, like the sea creatures using their natural abilities to help spread Percy's light across the oceans to keep dark sea - based threats at bay.
Grover could be a strong ally. He's always been Percy's friend and would likely stand by him even with this new role. Grover's ability to sense things could be helpful in complementing Percy's unseen powers. Another potential ally could be Chiron. Chiron has a wealth of knowledge and would probably guide Percy in understanding and using his new powers.
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.
Annabeth is a very likely ally. Their relationship is so strong that she would follow him into Tartarus and be by his side through thick and thin. Grover could also be an ally. He's Percy's long - time friend and his skills as a satyr could come in handy in Tartarus. Nico di Angelo is another possibility. His knowledge of the Underworld and his powers over the dead could be useful in the dangerous Tartarus environment.
Chiron could be an important ally. With his vast knowledge of the demigod world and its history, he could guide Percy in making just decisions. Also, some of the minor gods who have been overlooked in the past might side with Percy, seeing him as a champion of a more fair and inclusive form of justice.