Basically only changes are he has 2 older brothers.  End and track. That and endie has DID or multiple personality disorder. He has 2 personalitys endie and other endie other endie comes in at times of stress or when someone looks endie in the eye. Endie has no control over his other personality. Hes practically asleep when other endie takes over.

Hes 14

my personal headcanons for enders: have bulletproof bottom layer of skin 90% sugar. highly healing powers.