>>528553062
>No matter how many times you say it, you need a source.
Here you go.
>Yeah, that doesn't mean it was a type and supposed to be 18, they just mistakenly took it so that Amy's approximately half the age of Sonic.
Amy was originally a high-school cheerleader crushing on the then adult Sonic. It was based on the Shoujo dynamic of the younger girl having the hots for the cool older guy. And like said dynamic, Sonic would've viewed Amy as just a kid, much to her chagrin.