The very top one I started out making a new design for Shade, but I might use the design for Shack instead. Then I realize I made the hat look more like a pumpkin. It's supposed to be a beret. I haven't decided if I'm going to use this designs for either of them.
For the second one, I was just having fun coming up with a character. She has a sphere on her head like bomberman. She has a little mask that gives her certain abilities, after a character named karaoke bomber and pretty bomber.
And for the last one, I just wanted to draw Lucario and a pokéball. That's all.