I could probably talk about Ken's angst for quite a while because I am a loser enough to think about it that much and probably make it more than it actually is.'X3
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Ken pretty much became the Kaiser to escape from all the disappointing and devastating events he had to live with in the real world such as wishing for his brother, Sam who picked on him to disappear than him actually dieing which lead to his parents 'forcing' him to be 'Sam'.
He might have felt powerless in the 'real' world but in the digi world he could do whatever he wanted, even rule it so that he could hide from the fact that he isn't strong at all.
And even with all the power he found in the digi world he still couldn't escape the things that hurt him and made him weak.
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Yeah...I could probably ramble on for a while with that in a sad attempt to make myself sound smart.'X3

Wow the Kaiser is hard to draw all because of his hair. -_- I mean really it is just adklfaj;sdlkfajd all over the place. I had to draw it about 3 times to get it where I actually liked it.

Originally there was more to the picture. But I decided to crop it a bit so his face is a bit more of the focus.
Yeah, he looks creepy, I know, it is the point.X3
My sister pointed it out a couple of times.