Hal Tanaka is a character in Nancy Drew Secrets Can Kill. He is obsessed with getting a scholarship and will do whatever it takes to get one. His ambition is to go to college and become a doctor and he is afraid if he doesn't get a scholarship, this dream will be destroyed. Hal isn't his real name, he just chose it to fit in.
"Hal is a foreign exchange student from Japan. He is trying to get a scholarship so he can go to college. He's a nerdy sort of guy who studies all the time. And Hal isn't his real name, he just chose it to fit in better."
Hal seems to be a geek to other students, but he apparently does not seem to care. He is obsessed with getting his scholarship, and he may have killed Jake to end the blackmail.