Part of the reason fans constantly ask "Does Gandia die?" is because the showrunners teased his death multiple times before actually pulling the trigger.

In her final moments, Tokyo reveals she has pulled the pins on four grenades strapped to her chest. The resulting explosion kills Tokyo instantly and takes out Gandía along with several other members of the special forces. His Role Leading Up to Death

Unlike other hostages or authorities, Gandia was cunning, physically imposing, and completely ruthless. He is responsible for:

While the kill is officially credited to Palermo, it was a team effort. moments prior, Gandia had been shot by the team, and Tokyo (whom he had tortured earlier) played a massive role in his defeat.

If you are currently watching the show and wondering about the fate of the show’s most hated villain, the answer is yes.