I have a glow in the dark latex mask popping out of a glowing barrel using pneumatics. I have the option of loading up to 8 "scare sounds". Instead of just having a single sound, I thought it would be cool to change the sound each time it is operated. Some can be scary, some can be silly.

I was hoping to get some ideas for sounds.

Thus far, I have
Velociraptor from Jurassic Park
Beetlejuice - sound after "Can you be scary?

Any other ideas or sound clips?