Vernon is a water bear that Stewie and Brian befriend in "Big Trouble in Little Quahog".
When Brian and Stewie are shrunken to microscopic size, the narrowly avoid predatory dust mites and befriend Vernon, who leads them to other water bears. A horde of dust mites pursue the group as Stewie leads them out of his computer and manages to restore himself and Brian to their normal size. Stewie tries to reward their water bear friends with a drop of water, unfortunately drowning them all in the process.
Vernon is voiced by Kyrie Irving.