'''Basic Trope''': A character has amnesia of his/her identity.
* '''Straight''': Bob gets knocked on the head and forgets he was ever Bob, the CowboyCop, and becomes Jason, a GeniusDitz.
** Whenever Bob gets hit in the head, he will become Jason.
** Bob was TheDitz; somehow being hit in the head turns him into [[TVGenius a bona fide genius]].
* '''Downplayed''': Bob gets hit in the head, causing him to forget that he could play the piano.
* '''Justified''': Bob's doctor explains exactly how his brain was damaged to cause such a loss.
* '''Inverted''': A TapOnTheHead causes an amnesiac character to remember their past identities.
* '''Subverted''': Bob is merely ''acting'' like he doesn't know who he is [[ObfuscatingStupidity so as to throw off his enemies]].
* '''Double Subverted''': Bob is passing off acting like he has no memory as some kind of ploy, when he really ''has'' lost his memory.
* '''Parodied''': ???
* '''Zig-Zagged''': Bob keeps getting hit on the head, alternately erasing and restoring his memory.
* '''Averted''': Bob doesn't suffer from amnesia.
* '''Enforced''': ???
* '''Lampshaded''': ???
* '''Invoked''': Bob is a weapons designer who's having pangs of remorse, so he runs his face into a brick wall hoping to forget his old life.
* '''Exploited''': Zeke clonks Bob on the head so he can trick "Jason", the GeniusDitz persona, into building a DoomsdayDevice.
* '''Defied''': Zeke immediately calls out "Bob"/Jason on abusing ObfuscatingInsanity, and proceeds to [[ShownTheirWork explain all the reason why amnesia does not work like that.]] Jason immediately admits that the amnesia was a lie and he was trying to throw off suspicion.
* '''Discussed''': ???
* '''Conversed''': "Y'ever notice in shows like this, whenever a person gets hit on the head, the first thing they forget is who they are?"
Back to [[IdentityAmnesia Fanservice]]... Erh? What do you mean by "you're not the link that redirects to that page"?
%% Optional items, added after Conversed, at your discretion:
%%* '''Implied''': ???
%%* '''Deconstructed''': ???
%%* '''Reconstructed''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???