18. Quagmire's Dad — Newest & Free

: After Quagmire’s friends initially suspect Dan might be gay, Dan reveals he is actually "a woman trapped in a man's body" and plans to undergo gender reassignment surgery.

: Glenn Quagmire’s father, Lieutenant Commander Dan Quagmire , a highly decorated Navy war hero, comes to Quahog for a visit. 18. Quagmire's Dad

: She is a veteran of the Iraq war and the ex-husband of Crystal Quagmire. : After Quagmire’s friends initially suspect Dan might

: Following a successful surgery, Dan transitions into Ida Davis , an attractive blonde woman. Lieutenant Commander Dan Quagmire

: Fans often point out a continuity error where Quagmire (born in 1948) is roughly the same age as Ida, making the timeline of her fathering him physically impossible based on show lore.