The necklace belongs to his deceased mom and the scars are from burns and damage he got when he was an infant in the shipwreck.

The tattoos were given to him growing up so he didn't really have a say much to them.

He tries to hide the tattoos and scars because he feels uncomfortable showing them.

The main reason he hasn't got it cut is because he's had a bad reaction[the person who cut it last was undertrained and gave him a nasty wound] to getting it cut so he keeps it long.

Anyways she you in the next chapter my fluffy clan members.