NC for short. Website run by Jay Resop which glorifies Nintendo characters other than Mario. Famous for it's witty "comix" which constantly make 80s-90s pop culture references.

In the series of sonic the hedgehog 1- heroes these were the fastest game characters of all time!
Sonic the hedgehog
Amy the hedgehog
Shadow the hedgehog
Chaos the hedgehog

"There are always more Pokemon"

Essentially applies to series (of any franchise) which frequently add characters to an already massive pool of characters (although not necessarily negatively). However, In a more negative-context, sometimes this term may refer to the observation of a series feeling "over-crowded" with characters.

The term is along the lines of various other enumerated "rules" of internet (such as rule 34 and godwin's law.

Rule 151 comes from the Pokemon franchise, as there is constant expansion of the number of various 'monsters' in the games/series.
As said before, this can be applied to anything, not just the Pokemon franchise, but also to other things which seem to demonstrate a similar tendencies.

Dramatic Ignorance (n.)

Unlike in dramatic irony in which facts are not known by the characters but are known by the audience, in dramatic ignorance, authors must pretend that their characters are more ignorant than they normally would be to take into account the actual ignorance of the audience.

A 3d fighting game which is yet another ripoff of SEGA's Virtua Fighter, except that Dead or Alive caters to the lowest common denominator by featuring female characters with perfect bouncing breasts and plenty of panty-revealing kicks. Basically, the virtual chicks practically make the game sell itself well since, after all, there are plenty of sexually-repressed teenage/college males out there who will never score with a real girl anyway.

The sequel to Chrono Trigger which has over 40 characters, most of which are crappy and you'll never use them, but they show up to annoy you anyway. Like the prequel, it has several different endings, the main ending rewards you with three hours of Kid talking. I'm sure she says...useful things. I fell asleep, I don't know.

All those of non-caucasian, non-Japanese descent who own a Honda Civic with japanese characters on the back, or who are not Oda Nobunaga or any other samurai (including Ghost Dog.)