Apologies if this is all stuff you already know and you were being rhetorical but he definitely was not called Ötzi!
Ötzi is a 5300-ish year old mummy, found in the Ötztal Alps in Italy (hence his name). While the earliest form of writing was emerging from Sumer at the time, Ötzi likely came from a civilisation with no writing system.
Ötzi has a fanbase because frankly he's absolutely fascinating. For a long time he was the oldest tattooed person ever discovered (in 2018 older Egyptian mummies were discovered), with 61 tattoos, a series of lines and crosses, primarily on his joints. These tattoos were likely an early form of acupuncture since he had worn joints that likely caused him pain.
The amount we've been able to study and understand about Ötzi is incredible, and he has offered us an incredible view of the European Copper Age. He was 45. He was 5"3. He was around 50kgs. We know what his final meal was, how he dressed, where he came from and how he travelled to the Ötztal region (through pollen in his lungs). We know he was involved in copper smelting (high levels of copper and arsenic in his hair). He could still have 19 descendants alive today. We know he was sick three times in the last six months before he died. We know he had whipworms. We know he was lactose intolerant.
We know he was murdered. Not killed by a stranger, or robbed. He was murdered by someone, and it was probably personal, and he did not know it was coming. He bled out, from an arrow to the back, and nobody helped him.
His last meal was elaborate. He was not on the run, or in a hurry to get away. He was not chased up those mountains. Where was he going? Why was he being followed? His body was not looted. He was a wealthy man, for his time. He had good quality clothes, shoes that people have reconstructed and hiked up the mountain in (and found surprisingly comfortable, apparently).
Weapons, too. He was found with a copper axe, a knife, arrows and an unfinished bow, baskets and medicines. These were all valuable possessions. People were not so rich back then that they could easily discard items like this- so why were they left to rot on the mountain with him? Was the fact they'd been touched by Ötzi really so repugnant to whoever was on that mountain?
There are at least 4 other people's blood on his gear. On the knife. On the arrows. The arrow that they shot him with was left in his back but the shaft was removed.
We know so much about Ötzi. We know everything about his finals hours- except for everything about Ötzi. We do not know who he was, we do not know his name, and we do not know why he was killed. His murderers stand in the shadows and will never come out into the light.
Anyway, that's why I find him fascinating!