In 1965, Quaker Oats commissioned producer Jay Ward to create new characters for their cereal line, since he had previously produced ads for Cap'n Crunch.
The end result was a pair of cereals, Quisp & Quake. Now, to be perfectly honest, I've never had either of these cereals in my lifetime, though I have had Cap'n Crunch. I digress. Anyway, the dual ad campaign lasted a few years before Quake was pulled off the shelves (and he would return with Simon the kangaroo to promote Quangaroos, another short-lived Quaker cereal.
As for the characters themselves, Quisp, voiced by Daws Butler, is a goofy alien who would've fit in right at home with Rocky & His Friends. Quake (William Conrad, narrator of Rocky & The Fugitive) is a miner who looked a little too normal by comparison. As it turned out, kids preferred goofy over gallant, especially impressionable pre-schoolers who could roll their eyes the way Quisp does.
In the following introductory ad, the spokesman for the company, I believe, was voiced by either Daws Butler or Paul Frees. I'm just not sure.
Quisp is only available in limited markets these days, while Quake & Quangaroos have gone the way of a lot of failed products, shuffled off to limbo.