Okay kiddo, do you know what a group of people is? Like your friends at school or your family at home? Well, a long time ago there was a group of people from a place called Kutrigur. They lived in Eurasia which is a really big place with lots of countries. These people were called Kutrigurs. They were a group of nomads, which means they didn't have a permanent home and traveled from place to place.
The Kutrigurs were very good at riding horses and fighting. They were so good at fighting that they were hired by different armies to help them win battles. These armies liked them because they were brave and very strong. Sometimes they would even have special jobs like guarding important people or being spies.
The Kutrigurs had their own language and their own way of life. They liked to wear special clothes made from animal skins and they ate different kinds of food than we do today.
While they were living in this way, they met many other different groups of people and they became friends with some and enemies with others. Eventually, they became part of a bigger group of people called the Bulgars.
So, in summary, Kutrigurs were a group of nomads from a place called Kutrigur who were good at riding horses and fighting. They were hired by different armies for their bravery and strength, and eventually, they became part of a bigger group called the Bulgars.