These may be common knowledge, but they're good reminders/tips for everyone to abide by -- especially those procrastinators out there (myself included)!
Here are links to some anime sprite sheets -- more specifically, sprites from animes such as Bleach and Naruto (LOL).
You could probably make a pretty cool fangame using these sprites, or just insert them as a NPC in your game or whatever.
There are tons of cool sprites here! Just check out the background section, for example: so many amazing bgs to choose from!
I think this is a place where you can find ripped sprites or fan-made sprites from several games (I'm not sure which ones), but if you're looking for some anime-style sprites to incorporate, this is the place to go! :D The pixels themselves are great.
Although a majority of the sprites are based (or are from) animes, there are still a whole bunch of cool sprites that you can incorporate into your game here. They also have some cool backgrounds you can use!
There're lots of cool sprites here. You have fruit and vegetable sprites, treasure sprites (genies?), animal sprites, and more!
The page also has links to other pages on this website - the other pages have lots of enemy sprites that you can use, too.
There are a lot of awesome sprites to be used here; this site isn't just for Pokemon sprites! There are many sprites that can be applied to a non-Pokemon game as well.