Describe a character sketch of Gulliver.

Gulliver, as his name implies, is gullible, or easily deceived: he tends to trust too much in appearances. However, he is not witless, as he manages to survive the many perils of his travel.
Gulliver is not an imaginative person but more a recorder of facts. We can trust that he will give us an accurate accounting of what he sees on his travels, but at the same time, he may not understand the implication or deeper meaning of what is going on. This leads to comedy, as he will give straight faced, earnest accountings of ridiculous inventions or rituals he observes, not seeming to understand how ludicrous they are.
Despite all this, Gulliver is a kind-hearted man, even though this trait gets him into trouble. His tendency to surface evaluations, such as thinking the petty and mean Lilliputians must be good because they are tiny and attractive, leads readers to reflect on their own superficial judgments. At the end, Gulliver goes overboard in his love of the Houyhnhnms by coming back to Europe and living in a stable with horses. This is an indication of his moral goodness—he wants European society to behave more rationally and humanely—but also warns us not to go to extremes in our rejection of humanity.