Trending Ragnar Lothbrok Hair - This ragnar lothbrok hairstyle featured medium length hair on top, faded sides and a ponytail at the back. In vikings, ragnar lothbrok (travis fimmel) starts as a farmer whose ambitions lead him to join raids in england. Ragnar Lothbrok Hair - This ragnar lothbrok hairstyle featured medium length hair on top, faded sides and a ponytail at the back.