Poster showing Samurott standing on its hind legs and carrying its unsheathed seamitar
Samurott is a quadruped, blue, sea lion-like Pokémon. It has two pairs of pointed teeth, one in the upper jaw and one in the lower. Long, white whiskers extend from its snout and head, and it has a red nose and eyes. On the back of its head is a large, rounded beige helmet-like shell with spikes and a spear-like, pointed protrusion in the front. A dull bluish gray seashell-like carapace covers its underbelly, and its limbs are covered with beige, sectioned bracer-like coverings, that appear to be made of seashells. The forelimbs' bracers are actually swords called seamitars. The lower two segments of these bracers are the scabbards for the two swords, and the upper segment and spike make up the seamitar and its handle. Samurott possess three black digits on each limb, and a fin-like, splayed tail with the innermost section being beige.
When in battle, Samurott can stand on its hind legs and use one of its blades as a sword to fight. In the time it takes a foe to blink, it can draw and sheathe the seamitars attached to its front legs. One swing of its seamitar can beat opponents. It can silence foes with a glare or a howl.
Cedric Juniper has a Samurott that first appeared in At Liberty on Liberty Garden. It is used in the final battle with N, along with Black's Emboar and White's Serperior. It was formally an Oshawott intended to hand to starting trainers, until N came to attempt to liberate the starter Pokémon. The Oshawott remained, while the Tepig fled and N made off with the Snivy (the same Snivy who eventually joined White).
In the Pokémon RéBURST manga
Fraud has a Samurott in which he can use it as a Burst form.
Daikenki is the complete on'yomi (Chinese sound) reading of 大剣鬼 daikenki (big, sword-wielding demon). This is a combination of 大 dai (big), ken (sword), and ki (demon), with 剣鬼 kenki meaning "sword-wielding demon" or "sword master". Its Chinese and Korean names are based on this reading. 大 dai may refer to Samurott's place in the evolutionary line, as the biggest and therefore final evolution.
In other languages
From the complete on'yomi (Chinese sound) reading of 大剣鬼. A combination of 大 dai and 剣鬼 kenki (剣 ken, and 鬼 ki).