Nogbad the bad is the archetypal wicked uncle, obsessed with an ambition to regain the crown of the Northlands which (in his view) was wrongly given to his worthless nephew, Noggin. His life is spent devising ingeniously evil schemes to steal the crown, or force Noggin to give it up.
At the end of each saga, Nogbad is defeated, banished or, apparently, destroyed, but fortunately he always returns to his black castle and his loyal band of crows to plot the necessary evil for the next saga.
Try to imagine a viking version of Terry Thomas, or maybe Dick Dastardly, and you'll get the picture. Nogbad the Bad is undoubtedly people's most favourite character, probably because everyone else is so boringly nice all the time!