This little creatures are going into 3D Printing later. So we need a model in Blender, Maya etc. as a CAD file.
They are strong and can hold each other on hand and feet. Their body is the shape and size of a tennis ball.
For arms and legs take for size and position Pic1 as a reference. For hands and feet take pic2 and 3 as reference, but instead of 3 fingers they have 4 fingers and thumb. Instead of shoes they have hands like monkeys. Just make the the fingers and thumbs on feet a bit shorter. The palm should have same size as hands. As they can hold each other, one hand have to be front the other back like Pic5. Right hand front, left hand back. Feet are the same but right back and left front. Make hands and feet a bit bow, as people hold hand each other but leave the palm always quite flat, as they will be connected on the palm. Body Partition1, arms and hands partition2, legs and feet Partition3. Make some render front left, right, top, back.