My Zname Is...
A character's name is composed of an existing name with a random letter tacked on to its beginning.
A character has a name that is composed of a realistic name with a (usually random) letter tacked on to its beginning. Note that said letter has to be voiced, rather than silent. Compare My Nayme Is, where a name is deliberately misspelled in a very nonstandard, often unique way that sometimes does not match up with the name's actual pronunciation; and Law of Alien Names, where non-human cultures have names that sound remarkably similar to human ones, often for little to no reason other than simple pandering to their human audiences and/or expediency on the author's part.
Hello, Unknown Troper. You'll need to get known to lend a hand here.