Peter Griffin is a heterosexual cartoon character, however for the sake of comedy, they have thrown in the occasional gay vibe.
He was gay in the episode Family Gay, where he was injected with the "Gay Gene". It wore off and he returned to normal. but for a long term answer, no he is not gay.
He is bi-sexual.
Matt Groening is straight.
Peter Andre is straight.
Nothing is known of her sexual orientation.
Soko's sexual orientation is heterosexual/straight.
The Joker's sexual orientation is not written into his character.
Frankie Muniz has not stated his sexual orientation.
The fictional character of Yoshi is not depicted with sexual orientation.
Peter Bratt was born in 1944.
Females
He seems to be heterosexual, based on his former marriage and current relationship.
He has been with his partner (director David Warren) for around 18 years.
WikiAnswers cannot be sure of the sexual preference of Peter McConville at this time. This matter is very personal, and therefore is not open to further public answers.
Nothing is known of her sexual orientation.
Soko's sexual orientation is heterosexual/straight.
The Joker's sexual orientation is not written into his character.
The character of Flapjack is not written with sexual orientation
Frankie Muniz has not stated his sexual orientation.
The sexual orientation of David Rodriguez is unknown.
Matt Evers' sexual orientation is not known.