- Anti-Hero: Pragmatic Hero mainly. He's borderline Unscrupulous Hero in 2 and maybe Omega Strain, but goes back to Pragmatic by the fifth game.
- Dark Is Not Evil: He's usually seen in dark gear throughout most of the games, but is neutral at worst.
- The Dreaded: Gabe's efforts in crippling Black Baton and negating World War 3 made him "Undesirable Number One" for The Agency. He was so feared in Syphon Filter 2 that The Agency kept sending Spook field operatives and their top rank agents to subdue him, attempting to destroy the bridge with explosives so Gabe could never leave Colorado alive, using a sick Lian Xing as a bargaining chip, and planting a mole in form of Jason Chance as a psychological warfare to get under Gabe's skin.
- Then again, Gabe had served as U.S. Army in a covert operation during Soviet Afghan War and he was directly recommended by Benton who had witnessed Gabe's capability of countering ambush after ambush and disabling a battle tank. Gabe had shown potentials to become embodiment of this trope even before he joined The Agency.
- Good Is Not Nice
- The Hero Dies: Shot to death by Trinidad at the end of Syphon Filter: Logan's Shadow, as confirmed here.
- Knife Nut: Almost Always carries a knife in the second and third games.
- Pretty Little Headshots: How he canonically killed Shi Hao with a Sniper Rifle, according to Syphon Filter 3 opening.
- You Didn't See That: Gabe's backstory when he was still a U.S. Army officer in 1980's. Gabe's group was deployed in Afghanistan to help Benton (who claimed to be a CIA agent, but actually worked for The Agency) transferring weapons and supplies for Afghan rebels. However, it was revealed that Benton's contact was actually a KGB officer, who was eventually killed by Benton for unknown reason. According to Gabe's testimony, Benton told him to leave the weapons for the rebels and "forget what he had seen, for his own safety".