Board Thread:General Grimm Discussion/@comment-78.72.160.162-20150328122307/@comment-24399666-20151110213518

Aidan Williamson wrote: One usually doesn't develope their grimm powers until their thirties, at least, like how wesen don't start to develope their powers until puberty. Trubel was an exception to this and developed them early (as did April, the Drang-Zorn in the episode entitled "the bottle imp"). Josh is still young, so it may be a while before his powers start working. Actually, Trubel is typical of female Grimms. Girls mature as Grimms as children. Boys typically don't mature until they're adults. Kelly stated that it typically happens that way. Kelly herself was 11 when she became a Grimm.