Nikolai Belinski is one of the main protagonists of the canon Nazi Zombies story-line and appears in many fanon zombie maps. He is an alcoholic and has a huge obsession with vodka [however, it's implied that his drinking problem may have been caused by Richtofen's experiments and/or he may not want to remember his past]. His favorite perk is Speed Cola.
Nikolai hates Pronaide, a cut perk-a-cola, because of its very bad taste.
Nikolai had six wives, most of whom he killed and/or had children with, as he mentions a daughter in Shi No Numa.
Strangely enough, he seems to be mostly unaffected by the Super Soldier process' amnesiac effects.
Nikolai's point counter is blue.
He seems to like Juggernog as he delightfully sings along with it's tune, but adds his own words in.
Sometimes, he can sing the jingle for Quick Revive.