My siblings want to be something scary for Halloween. Only I have no idea what they could be. They are very adamant about it being scary and not "babyish".

The girls are 10, 8, and 6 and the boy is 9.
The girls really are cheerleaders so they don’t want to be dead ones understandably, and the boy was going to be scream last year but he saw the mask and started to cry.