As someone who is "on the spectrum" (mild Aspberger's), I'm just going to say that I didn't find Barry Allen's character offensive at all -- in fact, I found him funny. (To be honest, I thought he added a nice, light touch to what was often a very dark film.)
YMMV, but that's what I think.
"Oh, you can’t help that," said the Cat: "we’re all mad here. I’m mad. You’re mad."
"How do you know I’m mad?" said Alice.
"You must be," said the Cat, "or you wouldn’t have come here.”
- Lewis Carroll, Alice in Wonderland
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