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

Mr. Sigmarate

Source: Mr. Karate
Art of Fighting (Neo Geo) by SNK

King K. Sigma

Source: King K. Rool
Donkey Kong Country (SNES) by Rare

Sigtauros and Menardigma

Source: Saturos and Menardi
Golden Sun (GBA) by Camelot Software Planning

Guard Sigdaos

Source: Guard Daos
Lufia & the Fortress of Doom (SNES) by Neverland

The Sigmastrals

Source: The Sinistrals
Lufia II: Rise of the Sinistrals (SNES) by Neverland

Gastigma

Source: Gaston
Epic Mickey: Power of Illusion (3DS) by DreamRift

Xi-Tigma

Source: Xi-Tiger
Alien Soldier (Mega Drive) by Treasure

KAOSIGMA

A bonus request post awarded to @CordRocker for correctly guessing one of next month's Sigma Posts.

Source: KAOS
Donkey Kong Country 3: Dixie's Double Trouble! (SNES) by Rare

Dark Sigmage

Source: Dark Mage
Shining Force (Sega Genesis) by Climax Entertainment and Sonic! Software Planning

Liquid Sigflame

Source: Liquid Flame
Final Fantasy V (SFC) by Square