What kind of character is Sammy?

From Sammy’s language we learn that he has a strong sense
of his own identity. His anger at the "witch" in paragraph 1, for example, indicates an
awareness of his own worth when he is taken to task for what he thinks is an inadvertent
mistake. His first response to Stokesie, "Darling," I said, "Hold me tight" (paragraph
8), indicates a sense of humor, camaraderie, and capacity for enjoyment. Throughout the
story, which is presented in a spoken rather than written style as though Sammy is
speaking to a sympathetic and friendly listener, Sammy talks himself alive as a person
of perception, sensitivity, and understanding. But he does violate strict grammatical
rules. He switches tenses constantly (see, for example, the beginning of paragraph12),
and utilizes slang expressions (gunk in paragraph 12, jiggled in paragraph 5), inexact
modifiers (kind of in paragraph 32 and elsewhere), colloquial phrases (they all three of
them in paragraph 5, but never quite makes it in paragraph 2), misplaced modifiers
(Walking in the A & P … I suppose … in paragraph 4). That Sammy also uses a
possessive before a gerund (His repeating this struck me as funny in paragraph 15),
together with other passages of more "correct" English, suggests that his violations of
standard English are deliberate.