Hair!

jRPGs are pretty interesting for hair choices and favour very distinct looks. Final Fantasy games are notable in particular for lovingly rendered, unrealistic hairstyles. One of the most famous and cited characters for a gravity defying, unnatural hairstyle is Cloud Strife from FFVII.

While a lot of hairstyles are based on something 'realistic', they're often exaggerated and manipulated into something unique and eyecatching. The Tales of series follows this sort of trend, but their method for portraying hair is much more simplified. Hair is drawn in clumps, rather than individual strands.

This simplified/clump drawn hairstyle rendering is very common in all forms of media, and Japanese video games are no exception.

Colours are also fairly non standard. Like clothing, these hairstyles seem to have taken some kind of inspiration from Japanese popular culture. Outside of manga and anime, fashion once again provides a point of reference. Visual kei, a movement started in the 80s, emphasizes elaborate hair styles, flamboyant costumes and androgenous looks.

Like Japanese street fashion and 'medieval fantasy' armour, visual kei and games seem to influence each other in turn, with games taking inspiration from the visual kei look which then seems to find ideas and inspiration in games in turn. Thus, it's quite difficult to tell which medium did what first.

wRPGs, like jRPGs, take inspiration from popular culture and conventional Western hairstyles. In some games, character hairstyles are just designed on their facial models.

In situations where hair isn't realistically rendered, games seem to take a cue from comic art.