Depending on my mood, I call mine
"The Beast" or the "Green Dragon". Sometimes I call it something I shouldn't repeat in polite company, and I won't do it here either.
(...and I have had at least one car that had a specific string of profanty that would cause it to let go of any seized or rusted fastener if invoked in the right tone of voice.)
was called "The Project Bike" for a while, sometimes the "work bike", as it's going to spend time pulling a small trailer of landscaping/lawn maint. equipment. It'll probably get a nickname of it's own as my wife puts more time in on it, but that's for her to come up with. Her nickname's Harley to start with.