The Kremlings are a race of anthropomorphic crocodiles who are often the main enemies in the Donkey Kong universe. The vast majority of them are members of the Kremling Krew, led by King K. Rool (with the sole exception being K. Lumsy). Their homeland is the Crocodile Isle and they love their favorite theme park Krazy Kremland. Their main currency is their Kremkoins, which can also be used to gain access to the forbidden area known as the Lost World.
Kremlings resemble anthropomorphic crocodiles, but each one differs in appearance and color depending on their type, as there are numerous sub-species of Kremlings, but all-in-all, they all share the same distinct traits such as sharp teeth, scaly skin, and bulging eyes. Most Kremlings are shown to be bipedal and slightly human-like, but there are some who are, in fact, quadrupedal and animalistic. Kremlings also seem capable of breathing underwater and they are also able to survive in toxic waste, as shown in the Toxic Tower level in Donkey Kong Country 2: Diddy's Kong Quest. From what has been observed, some Kremling have non-reptilan features such as, spikes, ears and hair.
Also of note is that almost all Kremlings seen so far are male or just very masculine in appearance; in truth, the only real female Kremlings seen so far in the whole series are Kass and Kalypso. Kremlings are also known for their signature, rough "Ough!" scream when hurt or defeated. While in Donkey Kong Country very specific enemies had this cry (curiously even Rambi as well), from Donkey King Country 2 and onwards, most Kremlings share the iconic sound.
According with Crocodile Isle stages in their aspects, the Kremlings born in Lost World where they were tribal like the Kongs and created ancient booby traps against invaders.
Evolving, already started piracy where is evidenced by their looting and stealing of valuables showed in galleons, chests from Krocodile Kore and treasure caves. The Kloak, Kackle and Krossbones probably were these pirates by are using outlift of same.
When King K. Rool became ruler, the Kremlings also became millitants and advanced in mechanism as such things as airships and submarines. Unfortunately the K. Rool's dictatorship corrupted their society and turned them into a race of wasters when start the waste natural resources of own island and forming the Kremling Krew as invaders where they operate factories in others places.
Confessed by Klubba about how the Kremlings are miserable without leader, until Wrinkly tried teach Kremlings in her school to educate it and K. Lumsy is the only regenerated Kremling who refused destroy DK Island.