Santa Claus

 is a Boss in Escape from Tarkov.

Khorovod
Khorovod refers to a traditional russian dance, meaning "circle dancing and chorus singing". This can be seen in Tarkov occasionally during the "Gifter" event. Nearby Scavs will move to the tree and walk in a circle around the christmas trees on each map, while firing into the air and shouting. This includes Bosses and Guards. Shooting one of the scavs here or throwing a grenade near them will stop the dance and all will immediately aggro onto the player. There appears to be a cap of 6 scavs in the dance at once.

Loot
Note that the primary weapons can have numerous mod variations and those shown below are examples. Weapons=
 * -|Headwear=
 * -|Face cover=
 * -|Chest Rigs=
 * -|Backpack=
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Père Noël