Parasital Alien

Raneman

There needs to be some kind of alien parasite, preferably playable. There's nothing better then entering through any orifice you can find and doing something bad, like bursting out of their chest violently.

For example:
Xenomorphs got the Facehugger.

sheena_yanai

<img src="http://languagelog.ldc.upenn.edu/myl/LassiePressure.gif" border="0" class="linked-image" />