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

Last Sigmetroid

Source: Last Metroid
Super Metroid (SNES) by Nintendo R&D1 and Intelligent Systems

Giant Sigmursula

Source: Ursula
Kingdom Hearts: Chain of Memories (GBA) by Square Enix and Jupiter

Sigmursula

Source: Ursula
Kingdom Hearts: Chain of Memories (GBA) by Square Enix and Jupiter

Sigmernaut

Source: Juggernaut
X-men: Mutant Apocalypse (SNES) by Capcom

Oozaru Sigmageta

Source: Oozaru Vegeta
Dragon Ball Z: Attack of the Saiyans (DS) by Monolith Soft

Funky Sigma

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

Dr. Sigzomboss

Source: Dr. Zomboss
Plants vs. Zombies (PC) by PopCap Games

Sigmergil

Source: Vergil / pixelized trace of a retail chair photo
Project X Zone 2 (3DS) by Monolith Soft

You know me, I've thought about the question a long time.

And the answer is definitely Sigreggae. https://t.co/ZWSP8DQYhw

Siglitch

Source: Glitch
Garfield: Caught in the Act (Sega Genesis) by Sega Interactive