Sim, mostrou como seus pais realmente pareciam, pelo menos.
Antes de olhar no Mirror of Erised, Harry não se lembrava como eram seus pais e nunca os tinha visto antes. Ele só começou a sonhá-los depois de olhar no espelho (embora seja possível que ele tenha se lembrado deles em algum lugar inconscientemente). Antes disso, ele não conseguia se lembrar deles, não tinha visto nenhuma foto deles e não tinha ideia de como eles poderiam ser.
“He couldn’t remember his parents at all. His aunt and uncle never spoke about them, and of course he was forbidden to ask questions. There were no photographs of them in the house.”
- Harry Potter and the Philosopher's Stone, Chapter 2 (The Vanishing Glass)
No entanto, quando ele é descrito, o pai de Harry parecia exatamente como ele fez no Mirror of Erised.
“Excitement exploded in the pit of his stomach: it was as though he was looking at himself but with deliberate mistakes. James’s eyes were hazel, his nose was slightly longer than Harry’s and there was no scar on his forehead, but they had the same thin face, same mouth, same eyebrows; James’s hair stuck up at the back exactly as Harry’s did, his hands could have been Harry’s and Harry could tell that, when James stood up, they would be within an inch of each other in height.”
- Harry Potter and the Order of the Phoenix, Chapter 28 (Snape’s Worst Memory)
A mãe de Harry também se parecia com ela quando a viu no espelho.
Ninguém mais na família de Harry é descrito, então não podemos comparar ninguém com a aparência deles no Mirror of Erised, mas mostrou aos pais de Harry como eles realmente pareciam sem que ele lembrasse conscientemente deles. >“It was one of the girls from the lake edge. She had thick, dark red hair that fell to her shoulders, and startlingly green almond-shaped eyes – Harry’s eyes. Harry’s mother.”
- Harry Potter and the Order of the Phoenix, Chapter 28 (Snape’s Worst Memory)