I remember those GE BQs...they were used for local switching in a town I lived in when I was a teenager...oh yeah, no doubt about it, "BQ" sure doesn't stand for "Beauty Queen"...but there's another model that, to me, is in a tie with it for ugliness in a production model and one that surpasses it in horror...The "just as ugly" locomotive would be another GE monster and that'd be the C 39E...that great big square hump behind the cab always looked hideous to me, like railroad's version of the Humpback of Notre Dame...but the ALL-TIME ugly duckling would probably have to be Seaboard Air Line's Baby Face Baldwin locomotives...they looked terrible to begin with and later, SAL put frog-eye headlights on them...
Nobody has touched on this yet, but the MKT had some pretty homely makeshift Alcos, too.