With all due respect, if you name your kid after some pop culture game character in order to have a unique name, I'm assuming the child will resent you when they grow up -- because 10 years from now, I think Alacurd Cloud McMario will get teased for having a silly name.
You need to think about how the child will feel in 10 or 15 years, when the franchises the name is taken from may not exist anymore -- they'll be stuck with the name forever; or at least until they're legally able to change it.
If you're going to name the kid something game related, I would go with something that doesn't make people say 'huh' when they hear it -- 'Simon' as a first name, for example; it's an underused name by itself, but also a reference to the dignity and power associated with the character.
For the record, I know kids will pick on other kids for anything, but making something as core to a person as their name is pretty easy to avoid doing... (don't name a male child 'Susan')