Holtrax is a custom race for the new campaign I'm playing, his race has evolved to adapt in the underdark, he lacks eyes but he is not fully blind, he can " sense " beings around him, his axe helps him during fights as he can see through it ( he prefers to just use his "sight " in fight ). He had a tail but decided to cut it off so he could wear his armor.

His species lives in the dark, they use echolocation to hunt, while to communicate they use the part of the head where there should be eyes (pretty much their forehead), as of why he cut off his tail, the armor set was made for a no tail person. He uses the eye on his axe to know precisely where the enemies are, then the eye closes and hits directly after.