Honda Super Cub110 Episode: 06
Honda CB1100 Episode: 15-16
Looks like the artist used his favourite bits from several bikes, the engine is Superdream but 4 cylinder, styling is a little bit CB1100, shaft drive but no front brake?
Ducati unknown Episode: 25-26
Do you think he had a Kawasaki Z900/1000 in mind with this one? The fairing looks to be a mix of BMW RS and La Parisienne (see Jim Goose's Kwaka) @The sad biker> I thought more of Ducati but with no certainty. http://www.ducaticlassics.com/images/motorcycles/15/5.jpg
I don't see a Ducati but I'll go along with it for now.