Commercial use of this sprite is permitted. You cannot resell the sprite though in a sprite pack or on his own. You are only permitted to use him within your games personal or commercial.
Below is s super sized frame showing him off. The archive has the image strips; walking, jumping, running, climbing, dieing. The Character is 64x64 pixels and each strip has 4 or more frames.
Download him from here:
Have Fun! :)