Doctor Mikhail Sergeyevich Cossack

Dr. Mikhail Sergeyevich Cossack (Ｄｒ．ミハイル・セルゲイビッチ・コサック) is a Russian robotics engineer member of the Stravinsky Science Academy, and lives with his daughter, Kalinka. In Mega Man 4, he sent a letter to Dr. Light stating that he has created eight Robot Masters (consisting of Bright Man, Dive Man, Dust Man, Drill Man, Pharaoh Man, Ring Man, Skull Man, and Toad Man) and sent them to take over the world, in order to show the world his genius. Mega Man set out to defeat the eight new Robot Masters, and made his way to Cossack's Siberian fortress. Just as he defeated Cossack, Proto Man appeared with Kalinka and revealed the truth: Dr. Wily had kidnapped Kalinka and forced Dr. Cossack to build the robots as ransom. After Mega Man defeated Wily once again, Dr. Cossack built a robotic bird called Beat for him, as a gift for saving his daughter.

Dr. Cossack does not appear in Mega Man 5, only being mentioned in the manuals as informing Mega Man of Light's capture, and increasing the firepower of his Mega Buster's charged shots. In the Rockman Complete Works version of Mega Man 5 and its port in Mega Man Anniversary Collection, Cossack serves as the main guide in Navi Mode.

In Rockman ×over, Dr. Cossack, along with Dr. Light, is responsible for the creation of the Reploid OVER-1, the main protagonist of said game.

Cossack Catcher
The Cossack Catcher is the machine that Dr. Cossack uses in the fourth Cossack stage. Its design is based on the UFO prize catchers commonly found in arcades. Its weakness is the Dust Crusher, althought the fully-charged Mega Buster deals more damage. Mega Man can also use the Wire Adapter to inflict some damage against the machine. To avoid the risk of getting caught by the claw while standing directly under the machine, Mega Man should stand against the step in the boss room and begin firing the Wire Adapter just before the claw is directly over him. There is also the chance, if the machine is low enough, of hitting it twice with one shot of the Wire -- once on the way up, and again on the way back down. The battle will end when the Cossack Catcher has only two units of health left.

Damage Data Chart
Amount of damage in units that Cossack Catcher receives from each Special Weapon in Mega Man 4.

*For the Mega Buster and Pharaoh Shot, the first digit is when the weapon is fired normally and the second is when it is fully charged.

Other media
Dr. Cossack appears in Archie Comics' Mega Man comic series in the fourth graphic novel, Spiritus Ex Machina and in the manga Rockman 4, Rockman 6, Rockman 8, Mega Man Megamix and Mega Man Gigamix. He also makes a brief appearance in the Cossack Catcher in Mega Man 5: Rock of Ages.

Trivia

 * In the same fashion as fellow scientists Albert Wily and Thomas Light, Master Mikhail of the Sage Trinity in Mega Man ZX Advent was named after him.


 * The cartoon series version of Dr. Cain bears a slight resemblance to Dr. Cossack.


 * Dr. Cossack's full name may have come from the last Soviet leader, Mikhail Sergeyevich Gorbachev.


 * Despite being mentioned in Beat's data card in Mega Man & Bass, Dr. Cossack, himself, was absent from the database.


 * One portion of his castle stage layout made its way into Mega Man 10's Endless Stage.


 * Cossack's name, while sharing the name of the military communities of Ukraine and South Russia, is based off the dance known as the 'cossack,' alternatively known as a 'hopak' or 'gopak.'

Dr. Cossack