These are some robots that I made for a game jam. We over scoped on game play and ended up not having anything playable by the end but, I thought the art turned out good enough to post.
I modeled, rigged them in Maya and then animated and did the muzzle flash in Unity.
The shader for both of these is a combination of these two:
Linden Reid's Cel Shader with Outline
https://lindenreid.wordpress.com/2017/12/19/cel-shader-with-outline-in-unity/
And Roy Stan's Toon Shader
https://roystan.net/articles/toon-shader.html
I used the outline from the first one and the color and lighting from the second.