Scans_Daily

I always thought it was Dini and Timm with "Decoy, the Pig Hostage," in the Tiny Toon Adventures short, "Bat's All Folks." (For those unfamiliar with it, it introduced Plucky's alter-ego, Batduck, and his secret identity, Spruce Vain. And in persuading Hamton J. Pig to be Decoy, Plucky explained to him, "Every hero needs someone to confide in, someone to watch his back... someone to wear a bright red suit and draw all the fire--er, attention.")

Though that was written in early '89 and first aired in late 1990, so I may be wrong...