Even though Quagmire was the first person Cleveland informed about his own spin-off.

After Cleveland moved away, Quagmire has shown nothing but envy toward Cleveland, to the point of convincing himself that he was getting a spin-off and after delivering Loretta's deceased body, calling Cleveland "Joey".

If Quagmire could be summed up in just one word, it would be 'pervert'.

Of all his possible children, the only one with whom he has attempted to develop a relationship with and take care of is Anna Lee Quagmire, who is dropped off at his doorstep in "Quagmire's Baby".

He ends up giving her to adoption to give her a better life than he could ever provide.

Blaming Quagmire, he gets revenge by dating Cheryl Tiegs and taunting Quagmire, who retaliates by dating Jillian.

When Quagmire treats the four of them to dinner, Brian claims Quagmire was obese as a child, which sets off a chain of insults between him and Quagmire, causing a fight, making both Jillian and Cheryl dump them.

It's possible that the real reason that Quagmire no longer likes Brian is because Brian is simply a dog, as Quagmire developed an attraction to cats as demonstrated in "420" and in "Brothers & Sisters".

Although his dislike of Brian came to a head in "Jerome Is the New Black", earlier examples of his frustration with Brian include "The King Is Dead" in which Quagmire is jealous that Brian got the lead in The King and I. In "Meet the Quagmires", it is established that he already knew Peter and his future wife Lois. Quagmire is roughly 5'8" tall in "Blind Ambition" and 61 years old according to his driver's license in "FOX-y Lady", although he recounts a youthful sexual encounter with Tracey Bellings set in 1986 in "A Fistful of Meg".Sometime in his past, Quagmire formed a relationship with Cheryl Tiegs, whom he loved.Glenn Quagmire (born Glenn Quagglechek) is the sex-crazed, perverted neighbor of the Griffins. Glenn currently resides at 29 Spooner Street, Quahog, Rhode Island. He explains that he makes himself look younger by consuming carrots.This envy has not ceased, as in the first season finale of The Cleveland Show, he and Peter attend Cleveland's parents' wedding, and Quagmire asks Peter if he can have his own show, but Peter says he can't because he's a rapist.