Made in Blender. Made up entirely of quads except for one triangle on the side of the head.

Rigged with Blender's Rigify addon. If you need help, refer to Rigify's existing documentation. Includes t-pose, walking, and idle animations in Blender's action editor.

Comes with a 7x7 texture that allows for easy editing. Each pixel corresponds to an edge loop on the model.
The order of what the columns of pixels refer to, from left to right, are as follows:

1. Right arm
2. Right torso
3. Left torso
4. Left arm
5. Right leg
6. Left leg
7. Head

The pixels from top to bottom correspond respectively to the top and bottom of each section, such that the top of column 5 corresponds to the start of the leg in the hip region, and the bottom corresponds to the cap at the end of the leg.

The .blend file comes with a simple lit scene including a backdrop, key and fill lights, and the model itself.