Crystal is a CPU Mii.
Wii Sports 3[]
In Tennis Crystal's level is 510 to 540.
In Baseball her level is 980 to 1180.
In Boxing her level is 1269 to 1453.
Wii Sports Resort 3[]
In Swordplay her level is 971 to 975.
In Basketball her level is 1316 to 1320.
In Table Tennis her level is 1391 to 1395.