I think that the Bv141 shown was the ugliest plane of WW2. It didn't even have any symmetry involved. An assymetric plane would be awful to fly because there would be problems with airflow push. I hope the test-pilot was well briefed on predicted swing and push of the aircraft!!
Will have to look through at some stage because I think I do have some contenders. A passenger plane with about 10 sets of biplane wings does look a bit wierd and ugly. Think I have that plane from somewhere. Although not WW2 it still deserves a mention.
Yep - I always thought it was total crap until I came across this site on how effective the Finns operated it. The Buffaloes operated by the Marines at Midway were the heaviest and slowest climbing version of this aircraft.