After a long process of searching for the idea and several previous sketches that don't appear here, I came to this design by iktu. It was modelled almost entirely in 3D Maya and the automatic rig of Character Creator was used.
Finally, the character was discarded by the creator of the project, but I reused all the clothes and some parts of the body to put it on the base character of the project.
Facial expression test for Iktu
360 Iktu
Making of Iktu
3D iktu