Do you know image search results can be different if you search in a different language? Otaku Image Search is an app for searching anime characters. It automatically translates the character's name in English to Japanese and shows you more image results."
It has about 40,000 characters' name in the database, so you can search your favorite characters smoothly. Of course, you can save your favorite images to your Camera Roll. Hot words show the most popular characters. You might find new characters there. In addition, it saves browsing history so that you don't need to search images again and again.