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

Metal Rear W

Source: Metal Rear
Metal Slug 5 (Neo-Geo MVS) by Noise Factory, SNK Playmore and Mega Enterprise

Super Sigmeleton

Source: Super Skeleton
Shovel Knight: Treasure Trove (Various) by Yacht Club Games

Wily's Brain Machine

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

Dr. Digma

Source: Dr. Doom
Marvel Super Heroes (Arcade) by Capcom

Natural Killer Machine

Source: Natural Killer Cyborg
Mother 3 (GBA) by Brownie Brown and HAL Laboratory

Chuck D. Sigma

Source: Chuck D. Head
Decap Attack (Genesis) by Vic Tokai

Sigma D. Head

Source: Chuck D. Head
Decap Attack (Genesis) by Vic Tokai

Wily Machine K

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

Kaiser Novoligma

Source: Captain Novolin
Captain Novolin (SNES) by Sculptured Software

SigBrain

Source: BugBrain
Splatterhouse 2 (Genesis) by Now Production