Zmei (Russian)

[11] A three-, six-, nine-, and twelve-headed dragon are defeated on successive nights by the hero of the tale "Ivan the Peasant's Son and the Little Man the Size of a Finger" (Afanasyev #138).

In that form he enthralls the sister or wife of Ivan Tsarevich in different versions of "The Milk of Wild Beasts" [fr] (Afanasyev #204, #205), as described below.

In one of these (#204) the zmei also transforms into kitchen implements to avoid detection: he becomes a broom, a sort of mop (помело pomelo) and oven fork [ru].

[28] Zmei Gorynych (Russian: Змей Горыныч) has decidedly dragon-like characteristics, such as having multiple heads (from 3 to upwards of 12[29]), spitting fire, and being associated with a body of water.

[g][25] However, "Zmei Gorynych" is not consistently beast-like, and he may appear in the guise of a human thoroughout in some works (See §Milk of Wild Beasts, §Dobrynya and Marinka) below.

[31] The half-human quality is borne out by the sobriquet zmei-bogatyr (serpent-hero) given him,[32][33] and from him being able to ride a horse like a human being in the folktale "Alyosha Popovich".

[41][42] The zmei also transforms into a handsome youth to seduce women (folktale "The Milk of Wild Beasts" [fr], #204, 205).

She feigns illnesses and asks Ivan to perform the precarious task of retrieving the milk of the wolf, bear, and lioness.

Later however, when Ivan is separated from his trusty pack of animals, zmei reveals his true nature and poises to devour him with his gaping mouth.

[47] There is also the three-headed zmei defeated by Eruslan Lazarevich, hero of the story material found in popular print (lubki).

[49] The saint appears as "Egorii the brave" (Russian: Егорий Храбрый, with the epithet "chrabryii") in religious verses.