This entry is trivia, which is cool and all, but not a trope. On a work, it goes on the Trivia tab.

First Appearance

Exactly What It Says on the Tin, this is when a character first appears in an act of fiction. Please do not list examples here (everyone appeared at some point, after all). This trope belongs on a work's recap or trivia page.

This trope could also apply to a famous structure first appearing as well.

If it's about the first time a trope is first used in a series, use that trope.

Compare to Trope Maker and Ur-Example.
http://tvtropes.org/pmwiki/pmwiki.php/Main/FirstAppearance