While neither an animal nor an alien the image below is one of the less disturbing of the images. Made of vegitables this alien is also the most likely thing on this list I woul eat.

There is no real reason to assume that the human customs would mean anythnig to an alien species. For example this species shows none of the modesty compulsions of the modern human.

Perhaps what is most disturbing about this alien creature is that it almost looks like the features match but they do not quite look right. The eyes are it seems not eyes at all. Perhaps some sort of ear or some sense organ we do not even yet understand.

This is the alien we are most likely to have trouble with in my imagination. Almost human looking the strange eyes are almost an insult and make everyone who sees them squirm.

Finally we have the most intelligent of the aliens this creature is also clearly evil. You can see the venom in the eyes and the scowl is unmistakable . This alien cat would be just as happy to kill you as to treat you as an equal.

An occasional change of costume can help Cobra Commander make a few extra dollars as well. And while black may not be quite as iconic as the blue and red costume it does look good.

Even the Cobra Commander needs a day off and he can sometimes relax. Here is Cobra commander showing off a few of his toys as well as buying a few without the mask.

This last image is my favorite beacuse it is the Large Hadron Collider. This likely is not a time machine,but there is some theories that this may allow time machines.  Here is an article that looks at the possibility that it could send matter backwards in time. There is also a story of a strange man appearing claiming to be a time traveler.  You may want to consider that these articles mostly appeared around april 1st.