the actual name for the third generation water pokemon. it is on of the three pokemon you can choose at the beginning of the game. evolves into marshtomp and then swampert.

you are probably looking for the internet meme based on mudkip, which is listed under "mudkips"

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

Mudkip, the Mud Fish Pokémon. Mudkip uses the sensitive radar receptors on its headfin to determine what's going on around it. In a pinch, it can remish enough power to crush rocks.

Mudkip is the Pre-eveloved version of Marshtomp. Dex Entry: To alert it, the fin on its head senses the flow of water. It has the strength to heft boulders.
Dex Entry 2:In water, MUDKIP breathes using the gills on its cheeks. If it is faced with a tight situation in battle, this POKéMON will unleash its amazing power - it can crush rocks bigger than itself.

1. A miscellaneous or popularly-loved object.

2. The best starter pokemon ever.

Pokemon and popular word of 4chan /b/.

water starter pokemon in the 3rd gen series.

it has been accepted that the plural form of mudkip is now "more than one mudkip"