[Mr. Marshmallow]

I fail to see how it's not deliberate when Bloo is fully aware of Mac's fear of birthdays, and Bloo knows he is responsible for creating that fear. He knows he started it, he knows he developed the events that created that fear and he knew how to use it to do it again.

I also disagree with the whole "and I honestly don't believe Bloo puts enough thoughts into his actions to be truly capable of performing a seriously malice act". Consier the magnitude of this prank and it's insanely overly elborate nature, that's pretty well thought out if you ask me.

Bloo also may be a moron but he knows the difference between saying an insult and saying something nice, he's not unaware that words and actions can hurt people. He knew Herriman would get laughed at by posting up that video in WWW and he did it anyway, even after Frankie realized what she'd done.

The sad fact is, Bloo mostly thinks about himself, just like Goofball, the only difference being Goofball is so incredibly lazy and laidback he doesn't feel the need to do anything. Where as Bloo will go out of his way to have people pay attention to him, do what he wants, and listen to what he has to say.

Bloo's not the brightest blob in the world but he sure as hell knows how to hurt people. Far as karma goes, Bloo usually doesn't get payback unless he does something majorly bad. Half the rest of the time he's free to mock, jab, and verbally belittle Mac 24/7.

And the lack of karma comeback is SEVERELY evident in "Surprise".