Wikipedia:Articles for deletion/Agent K
I agree that the character is |notable.  There is plenty of coverage of the character in |reliable secondary sources.  Men in Black (film) has spawned a Television program|TV series, novel|novels, a sequel, and a video game.  Because of the bounty of popularity and spin-offs, there is a "likelihood of expansion," and because of the secondary sources, I don't believe the article "requires excessive plot detail and in-universe information" (per 
— User:ColorOfSuffering, 09:28, 16 September 2008 (UTC)
Stance: keep
Cited policy: WP:N||WP:RS||WP:FICTION (Wikipedia:Notability)