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

: She is a veteran of the Iraq war and the ex-husband of Crystal Quagmire.

: Quagmire struggles deeply to accept his father's new identity. Meanwhile, in a notorious subplot, Brian unwittingly has sex with Ida before discovering her previous identity as Quagmire's father. Key Character Details

: 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.

: 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.