This is "Mudkip,Marshtomp,Swampert,Mega Swampert Evolution" from Pokemon series
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Mudkip (Japanese: ミズゴロウ Mizugorou) is a Water-type Pokémon introduced in Generation III. It evolves into Marshtomp starting at level 16, which evolves into Swampert starting at level 36.
Marshtomp is an amphibious, bipedal Pokémon. Its body is primarily light-blue with a lighter shade of blue for its underside and an orange belly. Marshtomp's head has an angular black fin, orange eyes, and orange gills on the ends of both cheeks. It has long arms with three-fingered hands. Its feet have three small toes, and it has two black fins for tails. This Pokémon has a thin, sticky film enveloping its body that enables it to live on land. Its body weakens if its skin dries out, so it plays in the mud on beaches when the tide is low to replenish fluids. It is capable of moving faster through mud than water. With its sturdy legs, it has a good footing in mud that allows it to overwhelm struggling opponents. In Generation III, Muddy Water was its signature move. Marshtomp lives in swamps and other wetlands.
Swampert is an amphibian-like Pokémon with a bulky frame and four thick limbs, the two longer ones at the front serving as arms while the shorter limbs provide support for the creature if it chooses to stand upright. Swampert is semi-bipedal. It can stand on its three-toed feet with a hunched posture, and pick up or grab objects with its hands, but when moving about it tends to run on all four limbs. It has orange conical gills that protrude from round patches on either side of its face. Two large fan-like black fins extend from the top of its orange eyes to the back of its head. Similarly, a black fan-like tail fin extends upward from its hindquarters. Swampert is predominantly cobalt with a white abdomen, orange gills, and similarly orange padding on all four limbs.
As Mega Swampert, this Pokémon gains considerable bulk. Its upper body and arms become more muscular, bulging compared to its squat lower body. The orange padding on Swampert's thighs vanish, but it gains two additional patches of orange padding on each wrist and another patch on each shoulder. This padding and its gills become a darker, redder shade of orange, while the gills are now larger and bulbous, with filaments extending past its mouth. The black fins on its head are thicker and now extend down past its shoulders. The black tail fin is still shaped like an upward-turned fan, but it now forms a short ridge that extends up to this Pokémon's forehead, flanked on either side by the aforementioned head-fins. The webbed digits on Mega Swampert's "hands" take on a black color and now feature better defined articulations. According to the anime, Mega Swampert fills the organs on its back with air before diving underwater or battling; it uses that pressure to increase the power of its punches.