Viktor Reznov is actually part of two call of duty franchise the Call of Duty World at War and Call of Duty Black Ops
In cod world at war Sgt. Viktor Reznov was known as the partner of the character you play with named Pvt. Dimitri together with Viktor Reznov you play as Russian Soldiers who fight for Stalingrad and fight against he Nazis
In Black Ops Viktor Reznov plays a big role as a friend or an ally of Alex Mason I will not say further details because many people might haven't played the game and i will spoil them
If you spend your time chasing butterflies, they'll fly away. If you spend your time making a beautiful garden, the butterflies will come to you.
And if they don't, you still have your beautiful garden