I will look for some myself over the weekend, but you guys could also help. For the banner we are looking for faceless masses from anime or games (most likely anime, unfortunately the quality for faceless masses on games is not up to what we are looking for). Preferably, creepy mocking shadows, but they could be most things. Alternatively we could fill the banner with side character sprites from pkmn games or something and fill the rest in, but faceless masses sound like the superior option. Of course, if you have other ideas, go ahead and suggest them, but it would also have been a good idea to bring them up earlier if you had some.
