I still think you might be reading too much into it. Even if the things you mentioned are present, they are going to go way over the head of any child reading the book.
Perhaps, but so what? Apart from the fact that he's black and speaks slightly broken English, how is he different from any other cartoon villain?
I agree that the manner of his portrayal is tasteless, but the fact that he is portrayed as being hostile at all isn't "racist" in and of itself.
I'll admit that I did miss the "their" part of the equation. However, even then, the simple act of educating someone on a certain way of life isn't "racist" in and of itself. If he were to start doing comparisons, and going out of his way to present the natives' way of life as being buffoonish and idiotic in comparison to his own, that would be where I drew the line in this regard.
He might very well do this later in the comic. It simply wasn't apparent in the snippet Hat posted.
Well, yes, but that is what pretty much always happens when one culture conquers another. I don't find the simple allusion to it to be particularly offensive.
It depends upon the presentation.
Like I said, that could an honor bestowed on any high status visitor. It depends upon the context.