Nestor

You may be looking for Nestor Serrano.

Nestor was an enforcer of Russian mob leader Mishka Grenkov.

Underground
Nestor was first seen in one of Mishka's warehouses after he kidnapped Sofiya Vlacic. He later called Jack Bauer and discussed exchanging her life for his. Mishka ordered Alik to gather up several men to ambush Jack, while Nestor was tasked with guarding Sofiya. When Mishka checked in on Nestor and Sofiya sometime later, he was shocked to discover that Sofiya had broken free from her chair and impaled Nestor in the chest with a broken chair leg.