Malenkiy Petrenko was a bodyguard and enforcer for Sergei Petrenko's criminal organization before Day 1. As part of a deal with MS-13 leader Smiley Lopez, CTU agent Jack Bauer was forced to go undercover with Petrenko's group posing as drug distributor Felix Studhalter, in order to deliver Petrenko's meth shipment to Lopez. Jack phoned Malenkiy and arranged to meet him and Petrenko at a safe house in Santa Monica, north of Main Street. After Jack arrived and Malenkiy determined he wasn't wearing a wire, Petrenko said that the three of them would drive to the meth lab in the mountains, where Jack would receive the drugs and a truck to transport them. On the way, Petrenko directed Jack to a condominium complex where they picked up Franko, another gang member whom Jack had fought off earlier