Berty and Bart were always hilarious. I especially loved it when they got stuck under the Gratze Kingdom tunnel and, quote, "Fly, the bloomin' bridge is out!"
I have to wonder if they were some sort of parody of the british or they just had their own weird ass language.
Also, last avatar was the tank from Gratze kingdom, because I thought it was hysterical that the tank's driver was waving a tiny flag with a total
expression.