Sigma started two wars (X4, X7)
Three uprisings (MHX, X3, X8)
and masterminded four major terrorist attacks (Xtreme, Xtreme 2, X5) , two of which he participated in directly.
In the course of these actions he personally launched a missile attack on Abel City, unleashed at least 10 berserk mechaniloids, slaughtered at least 11 hunters, broke Vile out of prison, attacked the central highway, spread the virus all over the world infecting many hunters in the process, killed Gate in cold blood, beat Storm Eagle into submission and forced him to take over the airport, created the Zero Virus, corrupted and/or indirectly caused the deaths of Mac, Dr. Doppler, all infected residents of Doppler Town including Bit and Byte, the 8 mavericks of X5, 9/10 Red Alert Members, Techno and Midi, ordered Double to murder 8 members of X’s unit, indirectly caused Zero to kill Colonel and Iris, was indirectly responsible the deaths of General and all of the casualties of the Great War, attempted to destroy the earth with the Repliforce Final Weapon, hired Dynamo to crash the Space Colony into the Earth killing millions, ordered the planting of bombs on the legs of the central highway, deployed the Bee Bladders on Awakening Road, directed Chill Penguin’s takeover of the missile base and attempt to cause an avalanche, Octopus’s hostile takeover of the Marine city, Spark Mandrill’s attack on the power stations, Kuwanger’s takeover of the tower, Flame Mammoth’s takeover of the industrial plants, Armadillo’s energy mine takeover, Sting Chameleon’s forest attacks, Crystal Snail’s takeover of the energen crystal mine, Flame Stag’s attempt to cause an ice age with volcanic ash, Magna Centipede’s corruption and spread of the virus, Wire Sponge’s attack on the weather control station, Sonic Ostrich’s attempted missile strikes, Morph Moth’s takeover of the junkyard, Wheel Gator’s attack on city with his dinosaur tank, the bribery of Bubble Crab to fight naval battles, was behind the attack on the mother computer, Dr. Doppler’s attack on the Hunter Base, masterminded the Erasure terrorist attack, Dragoon’s attack on the Sky Lagoon which killed millions and caused the Great War, was responsible for Mega Scorpio's rampage, Hynard’s attack on the Lava factory, Anteator’s electrosphere virus, Stonekong’s attack on the forest division, Tonion’s radio tower takeover, Warfly’s naval attack, Crowrang’s Aerial assault, Boariski’s attempted bombing of the highway, Gungarro’s occupation of the underground weapons base, directed the 3 giant crab mechaniloids’ attack on Noah’s Park, Burn Rooster’s riot in the “Maverick Dump,” Giga Bolt Man-o-War’s energy hijack of Megalopolis, Pandemonium’s theft of the rocket data, Yeti’s sabotage of the environmental system, Trilobite’s attack on the space mineral mine, Antonion’s manipulation of the gravity facility, Dark Mantis’ illegal weapons production, Sunflower’s sabotage of the Troia facility, the kidnap of Lumine, and the takeover of the “Jakob” Project.
In summation, Sigma is an evil, cold, calculating, machiavellian, manipulative, Darwinian, hitler-esque sociopathic military leader with Luciferian ambitions, brilliant tactics, and inability to know when he has been beat.