Cliche Percy Jackson and Harry Potter Crossover

In this story, I am going to put every cliche that tends to be in Percy Jackson and Harry Potter crossovers. Comment if you have any ideas!

Percy just wanted a peaceful life after the giant war, but the fates were cruel. Turns out he has another evil gramps! "I have another evil gramps?!" he shouts.

Voldemort is rising and the golden trio knows that they can't do this alone. But when Dumbledore suggests they get the help of Voldemort's grandson, Harry is incredulous and thinks he is evil. "I think he is evil!" Harry yells incredulously.