In the spinoff anime Sword Art Online Alternative: Gun Gale Online we are introduced to a pre teen avatar named Llenn. A preppy pink wearing sharpshooter in the fictionar vr game Gun Gale Online's latest gun tournament. By the end of the 1st episode we learn in the real world she is really a very tall college girl.
In the second episode we learn she hates being tall and got into vr to escape to a new life where maybe she was average height. After trying many games and hating her avatar she finally is happy as she is an average height pre teen girl