Well, perhaps Percy has the same stormy - blue eyes as Poseidon, which are like the sea in a tempest. And his hair might be unruly and dark like Poseidon's, as if it were waves whipped up by the wind.
In some fanfictions, Percy might have an aura about him that is similar to Poseidon's. His movements could be fluid, like the ebb and flow of the ocean, which is a very Poseidon - like trait. Also, there could be little details like Percy having a certain pattern of freckles or moles on his face or body that mirror Poseidon in some symbolic way. His expressions might even have a hint of the ancient and powerful look that Poseidon is often depicted with, a sort of calm yet imposing presence.
One possible plot point could be that Percy's resemblance to Poseidon causes confusion among the other characters. They might mistake him for Poseidon at first glance, leading to some comical or tense situations.
Well, in the Percy Jackson universe, there's no official indication that Poseidon would be into watching Percy fanfiction. He's a god with his own set of concerns like ruling the seas and dealing with other gods. Fanfiction is more of a mortal concept, and it's hard to imagine him sitting around reading or watching it.
In some fanfictions, Harry might be described as having his mother's bright green eyes, which were said to be very expressive. Also, he could have her delicate facial features, like a small nose and a soft jawline. Maybe his hair has the same texture as his mother's, which could be a bit wavy.
In fanfictions, Poseidon often interacts with baby Percy in a very gentle and protective way. He might use his powers to create a safe environment for Percy, like a special underwater grotto where Percy can be hidden from danger. Sometimes, he sends sea creatures to watch over Percy, like dolphins or friendly sea nymphs.
In the 'Percy looks like a god fanfiction', the plot could develop as Percy tries to find out the reason for his new appearance. Along the way, he might gain new allies who are drawn to his new - found god - like qualities. And he may also have to fight against enemies who want to use his powers for their own evil purposes.
In certain fanfictions, Poseidon might hurt Percy's reputation. He could do something that makes the other demigods look at Percy in a different, negative light. This could be by making decisions that seem to favor Percy too much, causing jealousy among others, or by getting Percy involved in some political mess within the godly realm that Percy has no control over. This can lead to Percy being ostracized or having to deal with a lot of unnecessary drama and pain.
In such a fanfiction, Percy might have god - like physical features. For example, he could have a chiseled jawline and piercing eyes. His hair might seem to have an otherworldly glow, like that of a deity.
It would be really exciting. Percy could learn so much more about his powers directly from Poseidon. He might get special training, like learning to control the sea in ways he never thought possible. And they could have father - son bonding time, maybe going on adventures together in the underwater world.
Often, Poseidon is depicted as heartbroken. He may withdraw from his normal duties and just sit in his underwater palace, watching over Percy's lifeless body or the place where he died. He could also be shown as being very quiet and solemn, his usual boisterous nature gone, replaced by a deep sense of loss.
Poseidon might be extremely angry. He could immediately seek revenge on the abuser. After all, Percy is his son and he has the power to protect him.