New Hero?

Found a source that the next new unique hero might be (?) Future Knight (female). I am not sure if this poster is an official or unofficial one, but it is definitely interesting.

Source: https://gall.dcinside.com/mgallery/board/view/?id=guardiantales&no=1698705

The lower picture is from the opening of Guardian Tales. The character in the upper picture seems very similar to the character in the lower picture.