Simple Characters

Using simple shapes I've been tasked with designing a few characters.

Here's a few that I've come up with so far.

The first character started as a triangle from which I added a few squares/rectangles and a few more triangles to make a kind of strong guy who is also quick on his feet.
The second is just a average hight skinny guy made of mainly circles, he's soft and easily pushed around.
The third started as a square and out of it I made a short old man leaning on his walking stick.

Because I'm very bad at character design and it's not the path I'm pursuing these are pretty poor, nevertheless I had a go.