Watch a King Of The Hill match as a spectator in Theater mode, then highlight your avatar and press the X to display the "Avatar Move" menu. Afterward, activate the following moves by performing the corresponding combos:

MOVE - COMBO
#1 Point - Press Down, Up, Y
"$%#&!" - Press Up(2), B
"FATALITY!" - Press Up(2), Right(2), X
"FIGHT!" - Press Left, Right, X
"Finish Him!" - Press Left, Right, Left, Right, Y
"HA!" - Press Down, Up, Down, A
"I'm Not Worthy" - Press Down(2), Y
Big Clap - Press Right, Up, Y
Cheese - Press Left, Up, Down, B
Cover Face - Press Left, Right, B
Devil Horns - Press Down, Up, X
Diamond - Press Up, Down, Left, Y
Double Devil Horns Towards Screen. - Press Up, Down, Y
Gather Ice - Press Right(3), Left, Y
Hop - Press Up(2), X
Lighter - Press Down, Down, Up(2), X
Point - Press Right(2), X
Raiden Pose - Press Left(2), Right(2), X
Shake Head - Press Left, Right, A
Sleep - Press Down(3), B
Stink Wave - Press Right, Left, B
Stretch - Press Up, Down(2), B
Throw Tomato - Press Down(3), Up, A