What should i call my charecters in my book?

i have these characters a tough 47yo hill billy male a scared 37yo male hill billy a tough 15yo male hill billy a tough 21 yo female hill billy a strong 37yo Scottish man a young ninja like Asian male an old drunk male a blonde bimbo whose good with a gun (female) a nerdy medic (female) an nerdy... show more i have these characters
a tough 47yo hill billy male
a scared 37yo male hill billy
a tough 15yo male hill billy
a tough 21 yo female hill billy
a strong 37yo Scottish man
a young ninja like Asian male
an old drunk male
a blonde bimbo whose good with a gun (female)
a nerdy medic (female)
an nerdy ex-miner who lost a arm*(male 27)
a jobless man who is skilled with a bow and arrow (17)
an ex ski champion (male 31yo)
a douche bag whose in the navy (male 36)
a young exentric male DJ
a male biker (45)
a female biker (37)
thanks :)
Update: i mean a name for each one don't need a name for all of them but it would be good
Update 2: the books about a zombie apocalypse
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