Since the combiners haven't really shown very many unique characteristics (at least not in their G1 appearances) I like to theorize how they would actually function in various combat scenarios. Devastator: A dense tank like hulking brute, designed for destruction, busting Autobot defenses. He lacks the mobility and ranged firepower as some of the other combiners. What Devastator lacks in arsenal, explosives, mines and energy projection, he makes up for in pure metal smashing power. Even the Dinobots are mindful of him as he can crack them open! Defensor: Defensor is a balanced warrior system, combining agility, strength and armor. Defensor is one of the few Autobots (like Trailbreaker) that can generate a massive protective field around himself which can absorb enemy artillery and energy based attacks. Defensor is a great titan that can bolster an Autobot battalion or defend Autobot moon bases from Decepticon raids. Bruticus: Much lighter armored in comparison to Devastator, Bruticus carries a massive cache of destructive firepower for long range assaults. Bruticis is adept and clearing waves of ground troops and blasting Autobot defense structures from a distance. Computron: Is a warrior and super computer all rolled into one. As powerful as Bruticus, but lacking the strength of Devastator, Computron's arsenal of energy weapons and battle tactics makes up for his less dense superstructure. Computron can analyze and predict his enemies strategies which allows him to survive onslaughts from more powerful combiners. Predaking: Somewhere between Devastator's strength and Bruticus' heavy artillery is Predaking. To make up for his lack of armor, he carries a giant sword into battle, to make up for his lack of steel and stone smashing power, but combines ferocity and high mobility. Predaking is easily one of the most powerful single combat combiners. Abominus: A powerful brute that lumbers fearlessly into battle- even at risk of his own destruction, Abominus takes hits and keeps dishing them out. Even if it loses a limb in the process it will keep on pursuing its victim without regard for itself or its fellow Deceptions. Superion: Superion is a balanced warrior, with long range firepower, that sits somewhere between Bruticus and Abominus. While he cannot out muscle a combiner like Abominus he can out maneuver him. Superion possesses all the intelligence and analytic capabilities of any advanced cybertronian system- but is arrogant. Piranacon: Like Abominus, Pirancon is built for fighting, and is relentless in his assault- but unlike Abominus who cannot take direction- due to a malfunction in his programming, Piranacon is a tactician as well as a brutish killing machine. While other combiners can operate while submerged in water and other environmental hazards, Piranacon thrives in water.