Board Thread:Questions and Answers/@comment-33716942-20180105130323/@comment-33403544-20180105155943

yep, it dokkans in JPN only at the moment, which is not a problem if you're a JPN player. Anyway if you have a GLB account sooner or later they'll make it possible for us too.

If you want to know which units of your box can have a dokkan awakening you can check it in this wiki or directly in game