Glenn Quagmire, who mostly goes by his last name, is one of the Griffins' neighbors on Family Guy. Quagmire is a bit of a lovable perv and is voiced by the show's creator, Seth McFarlane.
Though you could never tell by the way he acts, Glenn is actually an airline pilot. Oh and Quagmire has a huge thing for Lois and ruined Cleveland's marriage. I say don't leave him alone with your daughter or wife.
(Lois walks out of Quagmire's house to pick up a letter from the mailbox)
Peter: Lois, what the hell? I'm gone for one night and you sleep with Quagmire?!
Lois: Mr. Griffin, what I do with my husband is none of your business.
Quagmire: Morning, Pete. Hope you and Molly can still join us for dinner tonight. Baby, Let's go play "Schoolgirl & Guy Who Has Sex With Schoolgirl".
Voiceover on TV: The Statue Of Liberty was a gift from France...
Guy: The Statue Of Liberty!?
Peter: Oh my kid must of taped over this for history class. Boys, boys! We're going to drink till she's hot.
Quagmire: Hey, thats just crazy enough to work