Board Thread:Spoilers!/@comment-1916997-20160706011058/@comment-6274680-20160805214829

David Anders is returning for one episode in season 6. http://www.ew.com/article/2016/08/05/once-upon-time-david-anders-season-6.

I hope the Jekyll-Hyde comment means they're from the LWC as well and Frankenstein was involved in their backstory somehow.