While young Bruce Wayne is studying Wayne Enterprises documents, an episode of Batman (1966) can be seen before the Breaking News Report as Alfred walks past the television.
WellZyn is an alternative spelling of the Dutch word "Welzijn", meaning "Wellbeing".
The addictive drugs "Viper" and "Venom" come from the Batman universe drug "Venom". Venom is a toxin produced by animals, including vipers and other snakes. "Venom", a drug most associated with the Batman villain Bane, causes a high that includes super-strength, but is addictive and weakens the immune system in the long run.
The tattoo on Nicolai's shoulder, eight pointed star or compass rose, is common in Russian criminal world. It is indicative of a vory v zakone, a thief-in-law, similar to a Don in the Cosa Nostra or Italian Mafia.
In the real-world, there is a biotech company called Genzyme, whether it is intentional or incidental that this Wayne Enterprise subsidiary has a
similar sounding name, WellZyn, is another matter entirely.