Dr. Ivan

Dr. Ivan, real name Ivanov, was a scientist working at Merrick Pharmaceuticals under Steven Merrick.

Appearance
For a scientist, Ivan's appearance is very casual and unkempt. He has fair skin, short dark hair, and stubble along his jaw and chin. He wears a pair of black square glasses, a light blue button-up with a white shirt underneath, and blue shorts.

Personality
Merrick mentions Ivan is unconcerned with ethics, which is supported when Nicky describes him as having been too eager to experiment on them simply for science. None of the experimentation is shown, but he was apparently very thorough in trying to find the source of Nicky and Joe's immortality, taking multiple samples of their skin, blood, bones, and organs while they were still conscious.

When given the chance to free Nicky and Joe, he only agrees in an attempt to save himself, which Nicky points out to him.

Plot
When Nicky and Joe are taken to Merrick, they are introduced to Dr. Ivan. Joe manages to take Merrick hostage and a shootout ensues. Nicky and Joe are captured again and taken to Ivan's laboratory. After checking every part of their bodies for anomalies that may be the cause of their immortality, Ivan breaks the news to Merrick that he couldn't find anything.

Later, during the second time Andy, Booker Nile attempt to save their teammates, Nicky and Joe convince Ivan to release them, who is under the impression Andy may let him go. Instead, once they're free, Joe snaps Ivan's neck and kills him.