Shinkawa Shouichi

Shinkawa Shoichi (新川 昌一) is one of the 10,000 players who were trapped in «Sword Art Online» where he was infamously known as «Red-Eyed XaXa» (赤眼のザザ). He later became a player of «Gun Gale Online» under the name Sterben (ステルベン). He is also the mysterious self-proclaimed «Death Gun», alongside his brother Shinkawa Kyouji, and is the main antagonist during the Phantom Bullet arc.

Sword Art Online
Going by the nickname «Red-Eyed XaXa», Shoichi belongs to the red guild «Laughing Coffin». Shiochi wears a skeletal mask and a black cape with a hood. He has the guild tattoo on one of his arms.

Gun Gale Online
Sterben's avatar in Gun Gale Online is similar to the one is Sword Art Online. Shoichi is terrifying and has dark clothing around him. He re-tattooed a half-opened coffin with an arm sticking out of inside, waving; the manga version of the emblem of «Laughing Coffin».

Background
When he was young, he was rather frail and sick and so often moved between his home and the hospital after graduating middle school. He entered high school a year late but his father had already given up on him taking over the family business and pushed the burden onto his younger brother. He eventually dropped out of high school and turned to the internet and started playing MMORPGs until he got trapped in Sword Art Online.

Aincrad Arc
XaXa was one of the top members in the red guild «Laughing Coffin». He was a master of the «Estoc Thorn Sword» that was bathed in the color of red. He holds a grudge against Kirito and the clearers that defeated Laughing Coffin in the anti-PK raid. He was also partners with Johnny Black, and together served as a combination where they poisoned and killed.

Phantom Bullet Arc
After an unknown time of consueling and observation after being released SAO (due to being an orange player), through the recommendation of his brother Kyouji, he began to play Gun Gale Online. The two looked to another Laughing Coffin member and began to plot an ingenious plan to kill players in both the virtual world and the real world. He enters the Bullet of Bullets tournament under the name «Sterben» to prove his "true" killing ability to the rest of the world. He would stun people with special shells from his L115A3 Silent Assassin sniper rifle and then get up close to shoot them with his «Death Gun», a 7.62 X 25 handgun. While he committed the kill in-game, his brother and the other Laughing Coffin member would inject the players in the real world with a syringe filled with succinylcholine, which stopped the heart. They had obtained the address by hiding under a «Metamaterial Optical Camouflage» while they watched the other players type their real addresses during the BoB registration process. His plans were foiled by Kirito and Sinon, and eventually goes to prison after the incident had passed.

Sword Art Online (SAO)
Skills
 * One Handed Estoc

Gun Gale Online (GGO)
Skills Equipment
 * Knife Creation
 * Weapon Creation
 * Starship Metal Estoc - Weapon created with game skills.
 * «Metamaterial Optical Camouflage»
 * Type 54 "Black Star" pistol
 *  L115A3 Silent Assassin