I am writing this post more for my own reference. I wanted to created a character in Blender, rig and animate it and then use it in Unity. Following videos show how I did this. I created a simple, stick-figure like, character in Blender and used it in Unity. In Unity I used Character controller, new input system and animation controller to move the character.
Stick-Figure Modelling in Blender
I started with an empty project (other than the default cube) in Blender and created a stick-figure character. I collapsed all the vertices of the cube to a single vertex, applied mirror modifier, skin modifier and subdivision surface modifier. Then extruded different parts of the character.