Below are some excellent name resources for finding your Kutrigur name.
Medieval Names Archive - This collection of articles on medieval and renaissance names is intended to help historical re-creators to choose authentic names.
Mongolian Names - Mongolian had no written form until 1204 when Genghis gave orders for it to be written in Uighur characters based on an Aramaic alphabet.
Mongolian Naming Conventions - This page documents the current usage of Mongolian language names, and romanization of those names in Wikipedia.