Just in general
Most Helpful Girl
I prefer medium.
Something like these
Not sure if they're considered short or long.1
Most Helpful Guy
It depends upon their facial structure (and also body type). A round face with feminine features should avoid long hair or else look like a woman--short hair with sharp lines is needed.
A guy with a hyper masculine square jaw would look hyper-hyper masculine with a sharp line, short haircut and would probably look too intimidating to most people. He should soften his appearance, and can get away with medium or long hair.0