In 2018, an unidentified scientist acted as the chief researcher at a Desperado-owned lab in Mexico. He and his staff did various amounts of brain surgery on kids they abducted across the world, to place into cyborg cranium canisters so Desperado and World Marshal would train them via VR training to replicate George Sears' methods of training child soldiers in Liberia. A day prior to Maverick's investigation into the lab, Sundowner and Colorado Senator Steven Armstrong arrived to inspect the progress. As they knew an investigation of the lab was inevitably going to occur soon, he was ordered by Sundowner to hurry up with the brain transplants, and later to kill off the children by Armstrong, after the latter agreed with the scientist regarding the difficulty of doing so. He was reluctant to do so, largely because his funding would be cut as well, although he relented under the condition of getting his payment. One of the abducted children, a Guyanese boy named George, escaped from the lab and was saved by the Maverick agent, Raiden. However, before Maverick could retrieve the boy from his safe spot, the scientist had beaten them to George. He later attempted to poison the children with chloroform rather than allow them to be rescued by Raiden, and also attempted to use George as a human shield, although Raiden ultimately killed the man before he could do anything to George, at George's request.
Behind the scenes
The character was first alluded to in a tweet by Quinton Flynn, Raiden's English voice actor, where he mentioned working with Benito Martinez (the scientist's English voice actor).
When telling Raiden about the properties of chloroform while attempting to gas the children, the scientist, while informing him about what happens when an overdose of chloroform occurs, says "adios, muchachos" when saying they'll die. The phrase means "Goodbye, boys" in Spanish. When trying to force Raiden to choose between the children and George's life, he also asks Raiden whether he should aid the needs of the many or the needs of the few, a paraphrase of Spock's final words in Star Trek II: The Wrath of Khan.