Sigma Posting (Follow on BS)さんのイラストまとめ

Sigmangel

Source: Save Point
Castlevania: Order of Ecclesia (DS) by Konami

Sigma Force

Source: Dark Force
Phantasy Star IV: The End of the Millennium (Genesis) by Sega

Sigmio

Source: Zio
Phantasy Star IV: The End of the Millennium (Genesis) by Sega

Sigmanos

Source: Thanos
Marvel Super Heroes (Arcade) by Capcom

Apocaligma

Source: Apocalypse
Marvel Super Heroes vs. Street Fighter (Arcade) by Capcom

Sigmocalypse

Source: Apocalypse
Marvel Super Heroes vs. Street Fighter (Arcade) by Capcom

The Sigmammon Machine

Source: The Mammon Machine
Chrono Trigger (SNES) by Square

Sigmatsu

Source: Retsu
Street Fighter (Arcade) by Capcom

Omega-Xigma

Source: Omega-Xis
Mega Man Star Force (DS) by Capcom

Sigmoddess

Source: Intro
The 7th Saga (SNES) by Produce!