Rockbot (Megaman classic lookalike)

I am the developer of Rockbot, a game inspirated from Capcom's Megaman 8-bit series of games.
It uses a custom engine, made in C++ with SDL library for easier multi-platform support. It currently have ports for several systems such as Windows, Linux, Playstation 2, PSP and Android. In Windows/Linux, it also have an editor made in C++ with Qt library, that can edit stages, characters and most of the game's details.

I am currently developing the second version of the game, and I am looking for original Megaman tilesets. I saw there is a lot of unfinished or abandone projects in this sense, and I would like to ask if anyone who owns such assets could allow it to be used in my game. For example, I got permission from megaman 4k (look in deviant art for Average-Hanzo) author to use his tilesets of this abandone project.

If anyone wants to contribute to the project, let me know. Thanks.

Here are some images from the game: