Diesel, to me, sounds like the name of a biker. A yucky one. The kind you see in movies who's all beardy and wearing leather and smoking crack and treating women badly, etc.
Banjo, to me, sounds like the name of one of those hipster people who think they're cool if they dress like he's raided an op shop with nerd glasses. Who perhaps plays a ukele because he thinks it makes him look cool and who wears a little fedora style cap, because, again, he thinks it makes him look cool. He also is probably vegan... not because he really cares that much about animals or anything, but mostly because he thinks it's trendy.
lol. So there are my very specific judgements.