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

Trigma

Source: Troy
Street Fighter 2010: The Final Fight (NES) by Capcom

One Sigma face edited from sprites provided by @hansungkee1 and Aburtos

Annoying Old Maverick Man

Source: Annoying Old Party Man
Earthbound (SNES) by Ape and HAL Laboratory

Sigmarmor Lords

Source: Armor Lords
Castlevania: Bloodlines (Genesis) by Konami

Shadow Maverick Sigmedeus

Source: Shadow Dragon Medeus
Fire Emblem: Mystery of the Emblem (SFC) by Intelligent Systems

Sigeorge

Source: George
Rampage (Arcade) by Bally Midway

Kligma

Source: Klubba
Donkey Kong Country 2: Diddy's Kong Quest (SNES) by Rare

Sigmitan

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

Neo Sigmhamut

Source: Neo Bahamut
Contra: Hard Corps (Genesis) by Konami

Neo Sigmhamut

Source: Neo Bahamut
Contra: Hard Corps (Genesis) by Konami

Taligma

Source: Talos
Castlevania: Harmony of Dissonance (GBA) by Konami