A NeoGaf thread has detailed some potential leaks to the Super Smash Bros Nintendo Wii U and 3DS roster. Don't read on any further if you're averse to spoilers.
First appearing on 4chan last week, the images on their own could be shrugged off as fakes, however gameplay videos were posted, which have since been taken down by copyright claims from Nintendo of America Inc. But you can see animated gifs of the gameplay on this NeoGaf thread.
The image below shows three different sets of leaks in the character roster, which includes new characters such as the Duck Hunt dog, plus R.O.B. and Ness. Thanks, Eurogamer.
Super Smash Bros. is due for release on 13th September in Japan on the 3DS, so we'll find out who's definitely in the full roster soon enough. North America and Europe receive the game on 3rd October. And the Wii U version is due for release before the end of the year.