The Matryoshka Dolls are a tactical grenade first appearing in the Call of Duty: Black Ops map Ascension, and reappearing in Call of the Dead. Matryoshka Dolls are Russian nesting dolls, with the outermost doll depicting a traditional Russian woman. Once opened, glowing multicolored dolls of Takeo Masaki, Tank Dempsey, Edward Richtofen, and Nikolai Belinski will burst forth and explode in a cluster bomb-like effect. The dolls can be acquired from the mystery box for 950 points, and any amount of players can hold a maximum of three. Nothing is known about the creation of the Matryoshka dolls, however a radio seems to suggest Samantha had these dolls as toys.
- In Ascension, the four dolls based on Takeo, Dempsey, Nikolai, and Richtofen can be found around the map, and even will talk to the player, giving a different voice line for different characters.
- While the Matryoshka Dolls do massive damage to zombies and space monkeys, the dolls do only 5% of the damage to George Romero.