So, the abnormals have their main power, but they also have some other shared powers.

Firstly, they have a very strong sixth sense. They always seem to know when danger is nearby, though they don't always know exactly what it is.

Secondly, they cannot be killed unless the one who kills them is another abnormal. They can still die of natural causes and such, but a normal human cannot kill them with anything. They always seem to heal up just fine if one tries.

And lastly, most of them have at least one heightened sense. So if you have an abnormal, you have to pick one of the five senses that they have better than a regular human.