I created this guy from the concept until the 3D render here. Initially I've design and modeled this little boy for a course about modeling characters for animation (in portuguese) and after I finished organizing the course I did the look development, made a couple of cool poses and here is the first pose and final result. I'll post the other poses below in the comments.
It was done using Blender, Substance Painter and render in Cycles.
Hope you like and feel free to comment or ask anything.
*Here is the link to the course for Brazilians out there.