Mr Ratban on Arthur is nothing new, Bugs Bunny wed Elmer Fudd decades ago! (year?)
Howabout :
Snagglepuss/Huckleberry Hound
Sailor Uranus & Neptune : Shinto wedding. Uranus in male obi-sash, Neptune in white kimono and head-piece. (starry eyed look from Usagi/Selena : "ooh, isn't it just romantic ?!?")
Poison Ivy/Harley Quinn : nice outdoor wedding in Gotham Botanical gardens. Plant life blossoms like crazy when Ivy kisses her bride...
others? LGBT.JPG