Fuck Yea is a series of four-pane cartoon strips featuring a stick figure looking complacent and confident. Originally posted via /b/ board in February 2010, these cartoons illustrate triumphant moments. This phenomenon can also be seen as the antithesis to Rageguy comics, another four-pane series originating from 4chan circa late 2008.
While the original post is no longer available, Know Your Meme user Stefan published the earliest known version of the meme on February 11th, 2010. The meme features a stick figure playing and winning a level in Guitar Hero (shown below). However, Know Your Meme users previously reported that the meme comes from the /b/ message board, with its earliest appearance being February 11th, 2010.
Many early examples of the meme are no longer available. On February 14th, 2010, eBaum's World  user robertRAGE published one of the earliest examples online, which features a stick figure playing on a pogo stick and saying "fuck yea" when they successfully stop themselves from falling (shown below, left).
That day, versions of the comic also appeared on the website xupwupx.nl (examples below, center and right).
Close Enough is a rage comic character that is used to convey mild satisfaction towards the outcome of a situation, despite not having achieved a result that would be considered ideal. It features the same character as Fuck Yea.
One of the first known appearances of the Close Enough Guy in a rage comic was shared on humor site Regretful Morning on March 17th, 2010 in a compilation of Fuck Yeah comics, showing a character who has just had sex but was unable to bring his partner to orgasm.