Simplify the following text for a Grade 9 native English-speaking person.
Original: Percy was portrayed by Logan Lerman in Percy Jackson & the Olympians : The Lightning Thief , a film adaptation of the first book of the first series , released in February 2010 .
Simplified: Percy is played by the actor Logan Lerman in the movie Percy Jackson & the Olympians : The Lightning Thief , a movie of the first book in the series , The Lightning Thief .