7soul is one of our favorite artist and is the core artwork style for pinoypixel. We have used his asset libary which can be purchased from various store platform but it can also be found in scirra market place.
We liked how clean and consistent the art style for all his assets, thus encourage diversity and reusability. The art style is also 16x16 format, thus make custom assets or variations won't be that difficult. Another plus is the price and volume of assets provided. A price tag of $10 for a decent set of characters and monsters is definitely a steal. Check out more of his works at deviant art page or at tumblr.