Well, Percy might be really confused at first. If Milner is some sort of mystery figure, Percy could be on guard. Maybe he thinks Milner is a threat from another mythological realm. He'd probably have his sword ready just in case.
Perhaps the baby has some unique powers. Percy finding the baby could be the start of a whole new adventure. He could take the baby on a journey to find out more about its parents. Along the way, they might encounter old enemies of Percy's or new threats. The baby could also form a special bond with Percy, and as it grows, it could become an important part of the demigod world. Percy would have to teach the baby about the world of gods and monsters, and how to survive in it.
In the fanfiction, it could be that the dragon is a guardian of some sort. Percy finding it could lead to a whole new adventure where he has to protect the dragon from other forces that want to use it for evil. Since Percy is a hero, he would definitely step up to the challenge.
In such a fanfiction, Percy might initially be very confused. He's used to his own world of Greek mythology and suddenly coming across Thor's hammer, Mjolnir, would be quite a shock. He might try to pick it up out of curiosity, not realizing its significance at first. If he could lift it, which is a big if considering it's only meant for the worthy in Norse mythology, it could lead to some really interesting power dynamics. Maybe he'd gain some new abilities related to thunder and lightning, which would be a huge shift from his water - based powers.
Well, if Paul finds out in the fanfiction, he might be shocked at first. He could react in different ways depending on what he finds out exactly. Maybe he discovers Percy's true identity as a demigod. He might try to protect Sally more, or he could be scared and want to distance himself from the whole situation.
Well, in this fanfiction, Percy might discover all sorts of treasures in the vault. Maybe it's filled with ancient magical artifacts that could give him new powers or abilities. It could also be a place full of secrets about his past or the world he lives in.
I'm not sure of a specific fanfiction where Percy Jackson finds Milner. You could try searching on fanfiction websites like Archive of Our Own or FanFiction.net. Use the search terms 'Percy Jackson' and 'Milner' to see if there are any relevant stories.
Hestia could use her power over the hearth to protect Percy and his friends. For instance, when they are in a dangerous situation, she might create a protective barrier around them using the warmth and energy of the hearth.
In such a fanfiction, Percy might help Hades with some internal underworld issues. For example, dealing with rebellious spirits. Since they are friends, Percy could use his unique abilities and knowledge of the modern world to assist Hades in modernizing certain underworld operations, like record - keeping. It could also lead to interesting interactions with other underworld deities who might be suspicious of this new friendship.
In the 'Percy Jackson Disappears' fanfiction, perhaps Percy could be kidnapped by an unknown enemy. Maybe it's a new villain who has a vendetta against the demigods. This would lead to his friends, like Annabeth, going on a desperate search for him, facing many dangerous challenges along the way.
In fanfiction, Percy could be in the hospital because he was captured by an enemy and tortured. Now he's there being healed by the camp's healers or some advanced demigod medical technology. Another possibility is that he's having some sort of identity crisis related to his demigod status and it's causing him physical and mental stress, so he's in the hospital for both medical and psychological help.