Josh Richter is the most popular senior at Albert Einstein for the first five books.

He is dating Lana Weinberger. He is on the crew team and is co-valedictorian. Mia once described him as the most attractive boy in school; he is very tall and muscular and has "electric" blue eyes.

At the end of the first book, Josh Richter takes Mia to the "Cultural Diversity Dance", where he kisses her on the entrance steps of her school. Realizing that he used her to enter the media spotlight, Mia dislikes him afterwards and tries to avoid him, though this is difficult because of their adjacent lockers. She realises afterwards that it is Michael that she loves and also that she was never in love with Josh Richter, but got caught up in his popularity and great good looks.