It seems that Kat hated Coop from the first moment they met. But Kat had just been on the receiving end of a baseball. Not just any baseball. A baseball thrown door Millie... I'm pretty sure that u would have hissed at the first thing u saw if u were in his position!

Coop then attacks Kat with a wave of insults, not the best way to make a friend... Millie does the polar opposite; she welcomes Kat with open arms and insists that they keep him.

How would u feel if u just landed in a foreign country of an alien world and the first creature u meet hates u and wants to be rid of u and the seconde loves, feeds and wants to look after you?

Then imagine that this evil creature seeks up to u while u are sleeping and steels your only way to talk to,or go home. u would try to get it back! But how? u can't reason with this creature! So u try to take it door force. But then your only way to see your family again is destroyed...

Now u are really mad and have made it your goal to cause as much pain and humiliation to this evil creature, to Coop.

Coop has hundreds of insults about Kat’s appearance. But in Fangs for the Memories Coop complements and enjoys playing with Kat. This means that he doesn’t actually have anything against Kat of his appearance. In Strange Kat on a Train Coop also tells Kat that he has to admit that one of his abilities is pretty cool.

It is only because Coop knows that Kat is an agent commanded to threaten Humanity that he despises him so.

Coop’s point of view is clear and obvious. He is a 10/11 jaar old kid who loves destroying aliens in video games, Watching Captain Blasteroid and saving the Earth. Therefore no matter what Kat does he must be stopped.