It's come to my attention after the Rottweiler thing that people are afraid of a lawsuit for sharing the same name with another character. Thing is, I would like to know exactly what the gray area is when it comes to these names because there's plenty of cases of fictional names being shared.
Both Marvel and DC have supervillains named Scarecrow. Ditto for Enchantress. And they have superheroes named Captain Marvel (it's a long story)
There's a Tracer in Marvel, DC, Transformers, and of course, Overwatch.
Slipknot is a minor DC villain, but is much more widely recognized as a mask metal band from Iowa.
Nova is the name of a Marvel superhero. Also the name of a psionic assassin in Starcraft.
Radioactive Man, from the Marvel Universe or from the Simpsons?
There's more but you get the point. I feel like at this point it's impossible for characters not to share the same name with others. So what is the gray area so to speak? Just wanted to see what others think.