Board Thread:General Discussion/@comment-26099499-20150226151824/@comment-25801533-20150826230008

There is also the fact that grey hair is no indicator of age, in RWBY or the real world. There are some people who have a full head of grey hair at the age of 25. Mercury also has grey hair and we know he isnt in his 30s, 40s, or 50s, he is most likely mid to late 20s.