Are you talking monsters or cryptids?
If you mean cryptids, Russia has a lot of them:
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Zana (Hominid)-
Bergman's BearThere are a few lake 'monsters'
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Lake Brosno-
Lake Khaiyr-
Lake LabynkrQUOTE
HOMO NEANDERTHALENSIS: The "Sister" species of Homo sapiens and it's two accepted subspecies. Slightly shorter on average, more robust in build, "Barrel chested," stronger musculature, thicker boned with slightly more pronounced eyeridges and a receded chin. These humans were for all intents and purposes the intellectual equals of their Homo sapiens "Cro-magnon" cousins, us modern humans. Some forensic anthropologists believe that their verbal language abilities may have been lessened by the physical construction of their glottal (Voicebox) structures in their throats. Further, recent hypothesies have been profered that to compensate, the neanderthal language may have used more hand gestures and signing as do modern persons who are def. Another intriguing hypothesis suggests that they may have had advanced psychic abilities, such as what the American military and intel agencies have labeled as "Anomalous intuition" and "Remote viewing." Special talents that have perhaps become more latent and recessive in the "Fast talking" Homo sapiens sapiens cultures. Legends from Russia, Afganistan, and the surrounding countries suggest that a lost tribe or two might still exist in the Pamir Mountains. Of further interest, Neanderthal characteristics can still be observed in the island tribes of New Guinea. In Europe, the last undiluted stocks of neanderthals may have been the Picts of northern Scotland. The Pictish warriors were legendary fighters who won the respect of the ancient Britons, the Celts and the Saxon peoples who invaded, conquered and intermarried to become the peoples of the modern United kingdom. The Picts were said to fight to the last man, and since the women (Who were described as extraordinarily ugly--Thus suggesting a separate species or subspecies) fought with the ferocity of naked wild animals, beside their men; at last genocide was the only remedy for containing them. What was begun by the Celts was completed by the Saxons and early Scot settlers: The killing of every last Pictish man, woman, and child. In the opposite extreme, Neanderthals were said to peacefully coexist with modern humans for over 120,000 years in the valleys of prehistoric Israel and Lebanon. No significant evidence of protracted conflict or warfare has ever been found in any of the modern archeological digs.
SourceThere is much more if you just look hard enough. These were the easy ones to find.