This orange-flavored cereal was sold under the name Quake's Orange Quangaroos and later simply as Orange Quangaroos.
Quangaroos was a spin-off cereal. Nearly a decade earlier, Quaker simultaneously introduced Quisp and Quake which were promoted together. The usual story line of their advertisements had the cereals' opposing mascots (Quisp and Quake) fighting over whose cereal was better. In '72, Quaker let consumers decide which cereal was best by having a vote. The losing cereal was Quake, and it was promptly discontinued. Very shortly after Quake Cereal got the ax, Quake's Orange Quangaroos came on the scene.
The cereal box and commercials featured the character Quake in a supporting roll to a new mascot, Simon The Quangaroo.
Like Quake cereal before it, Quangaroos was pitted against Quisp in advertisements. The public once again choose Quisp.
The reason Quangaroos never took off had to do more with the flavor of the cereal than the popularity of it's mascots. Consumers were split over the cereal. Those who liked it found the orange flavor to be original and genuinely orangey. They liked how the milk would turn orange. Those who didn't like the cereal often referred to a metallic aftertaste.
Simon The Quangaroo
Quisp, and Quake