A Captain in the Russian KGB, Brashnikov is a compulsive kleptomaniac. He is jailed by his superiors for selling stolen office supplies on the black market. Later, he is released from prison, given his old rank, and trained in the use of the stolen Vibration Suit (Krahseevah.)
This all occurs in #78 - arguably one of the best Destroyers - and the funniest. Brashnikov is chosen for this important and dangerous mission because he fills stringent requirements. He's small enough to fit in a suit sized to a fit Japanese man.
Brashnikov is basically a coward, and a thief. This leads to his downfall. No official, officer, department, etc. in the USA had any idea he existed - until steaks and blue jeans turned up missing!