OVA
Description
Sikorsky is a Russian convict who escaped Evans prison, a converted ICBM base, by climbing the nearly smooth interior of a 100-meter missile silo using exceptional grip strength despite weighing over 220 pounds. Prison guards implied he was ex-military and could have won multiple Olympic gold medals for Russia had he not turned to crime. After escaping, he brutally defeated Russian wrestler Alexander Gallen and declared he was heading to Japan to "know defeat".

He arrived in Tokyo with four other death row inmates—Dorian, Spec, Doyle, and Ryuukou Yanagi—due to "synchronicity". Under promoter Mitsunari Tokugawa's rules allowing fights anywhere in the Underground Arena, Sikorsky initiated hostilities. He challenged and easily defeated judoka Tateoka, inflicting severe facial injuries with his flesh-cutting knuckle technique. He later humiliated professional wrestler Kanji Igari twice: first with a surprise dropkick, and second by urinating on him after countering Igari's revenge ambush. Igari likened Sikorsky to a "tanuki" for his deceptive, shapeshifting-like combat tactics.

Acting on Yujiro Hanma's orders, Sikorsky kidnapped Baki Hanma's girlfriend, Kozue Matsumoto. During the rescue, Baki knocked Sikorsky out of a 27th-story window; Sikorsky survived by scaling the building's exterior with his grip strength. He rejoined the fight until police intervention forced him to flee into the sewers. Baki pursued, forced him to fight nude, and defeated him before Biscuit Oliva arrested him. Sikorsky later escaped custody and temporarily allied with Yanagi against Baki.

Sikorsky later ambushed Jack Hanma in a telephone booth but was defeated. Jack transported him to the Underground Arena, where Gaia became Sikorsky's tag-team opponent. During the fight, Sikorsky hypocritically demanded Gaia stop using camouflage and "fight like a man," despite his own reliance on deception. Gaia overwhelmed him, reducing Sikorsky to terrified submission where he cowered, begged for mercy, and admitted defeat.

Following his arrest, Sikorsky reappeared in the "Revenge Tokyo" storyline, imprisoned but training to enhance his grip strength further. He practiced clinging to completely flat vertical surfaces nightly while sleeping. The spin-off "Baki Gaiden: Gaia to Sikorsky" explores his interactions with Gaia.

Sikorsky's fighting style emphasizes brute force, deception, and psychological manipulation. He disdains formal matches, claiming true fighters need no rules or audiences, though he uses professional wrestling moves like the dropkick. His signature technique protrudes the knuckle of his middle finger to slash opponents' flesh. Additional abilities include climbing sheer surfaces via fingertip pinching, surviving high falls, and enduring significant punishment like multiple gunshots to a bulletproof vest and groin strikes. Techniques include roll kicks, chop-blows, and tackles.