For No Future's main character, visual wise, is all real life insperation.
I based half my main character's hair style (that's it, just the hair style, not the colour, I let my little sister pick the colour, which I should have known before asking would be blue, because that's her favourite colour) off a 'spiky head' art friend (who would keep it down styled at the front, but spikey in the back) I had and used to share convention tables with waaaay back when we were first starting conventions (he pretty much still styles it this way after all these years) This was a really long time ago, and it was pretty funny because when the designs for Noctis came out (under the FF13vs name) no one could get over how similar the two looked, he even did cosplay of him because both his looks and his 'usual style of hair' where so friggen spot on for him. (I won't post pictures of him cause that's weird, and it's been yeeeeeeeeeeaaaaaars so we don't really have connections anymore)
Second half of insperation for the brushed back more than up spiky hair part of the look, is how my younger brother spiked his own hair, he would style it via gel and put the hose of mom's huge as heck shop vac on the air blowing end instead of the air sucking one. (she worked janitorial, she used a huge heavy duty industrial powerful vacume) and have it just blow all his hair back in a violent shop vac powered blast of air, resulting it in kind of a aiming backward and up instead of just up, and then stay that way.
Personality is a completely different story, though that also all has stuff pulled from real life.
(I seem to get a lot of 'he reminds me of Sasuke' comments for him. I wonder if that was the 'insperation' for my friend's choice in hairstyle)