霍比特人里那个人头上为什么会有个小斧子
提问者所指的人物是矮人比佛(Bifur),见图:
按照电影设定,比佛头上的斧子是一柄生锈的半兽人斧头,这处创伤造成他口齿不清和脾气暴躁。但并没有解释这柄斧头是怎么插上去的。
Bifur has the rusting remains of an Orc axe embedded in his forehead, which has rendered him inarticulate and occasionally feisty!