You can make literally anything look more menacing (or less menacing) if you wanted to. It doesn't matter whether its a Mazda2 or a riding mower. It won't be as menacing as a '69 Mustang, but more menacing than stock? Definitely.
@Jamjunior I'm not familiar with the Mazda2 so I'm not sure if there are any bodykit options out there, but given that your car is black, I would suggest darker window tint and black aftermarket wheels. It looks like you've already got black emblems and black window trim. Another thing you can look into is eyelids for the headlights, and you could also lower the car a little bit to give it a more aggressive stance.