Because they're demons and humans are usually afraid of things they don't understand and if they are not afraid they try to use that thing for their personal greed. That's how most humans are in real life and in fantasy.
Sometimes I hate being human
#－.－) （￣へ￣）
Me too. Even if I am half human
what's the other half? Cause depending on the answer I could be VERY jealous. ^^
Phsycho
^^ Damn. ^^
Muhahahaha!!!
And here I thought Megaman got rid od Dr. Willy.... wrong again....
oh well if you can't beat 'em ... XD
super cute manga ヾ(❀╹◡╹)ﾉ~.. but why demons always forced to endure cruel humans acts ╥﹏╥