Question # 263

This individual's name is said to mean 'one of the most common amphibians' in the vernacular. Evidence suggests that this name was artificially made up, because it does not mean 'one of the most common amphibians' in any known language. The creator of this name stated that it's first syllable should rhyme with "cow" and so it is pronounced this way in Britain, while in America it is almost always pronounced to rhyme with "go". What name/character is referred to here?

Question by Suraj Menon