I used to build a dragon community. Fireman (ironic, I know...), policeman, golfer, Batman... anything you could think of. Using only thick classic bricks.
Place 2 2×2 on top of one another. Put a 4×2 on top to form a T. Then a yellow 3×2 on top in the middle, hanging off the front of the T by one stud. Then a yellow 2×2 on top centre again. The yellow is your head. The bottom block is your pants. The rest is your shirt. Now put a cap on, etc. Make as many custom characters as you want! A 3×2 wedge makes a nice cap, btw.