Thread:Manic The Hedgehog/@comment-4832338-20120426154630/@comment-6345313-20120426155210

Because it's silly to assume everyone in the world know's which character you're talking about. By having first names only, you're assuming your reader knows who you're talking about. We all do as South Park fans, but for those who aren't, they don't.  When writing, it's better to not write as if you're talking to South Park fans, but rather focus on talking to everyone else.