GIFs from the said game series. All of them are idle animations because I am not good enough for complex ones.
Black Hound - Metal Slug 5
Bradley (Ptolemaic Army version) - Metal Slug 5
Di-Cokka MK II - Metal Slug
Di-Cokka (Ptolemaic Army version) - Metal Slug 5
Donald Morden - Metal Slug 2, X, 3 and 6 (in this vehicle)
Emain Macha - Metal Slug Advance
Formor - Metal Slug Advance
Future Di-Cokka - Metal Slug 7 and XX
Di-Cokka (General Morden) - Metal Slug 6, 7 and XX
M-15A Bradley - Metal Slug 2, X, 3, 4, 7, and XX
Prototype Iron - Metal Slug Defense (as Iron Nokameow) and Attack
Slug Mobile - Metal Slug 5
SV-001 Experimental - Metal Slug
SV-001 Type-R - Metal Slug, X, 3 and 6
Christmas Eri - Metal Slug Defense and Attack
Christmas Fio - Metal Slug Defense and Attack
Dragunov - Metal Slug Attack
Everlasting Summer Eri - Metal Slug Attack
Everlasting Summer Fio - Metal Slug Attack
Special Nadia - Metal Slug Attack
Valentine Nadia - Metal Slug Defense and Attack
T-2B Melty Honey - Metal Slug, 2, X, 3, 4, 6, 7 and XX
Crazy Ralf - Metal Slug Attack
Red Eye - Metal Slug Defense and Attack (In terms of design)
Gimlet - Metal Slug Defense and Attack (In terms of design)
Iron Nokana MK II - Metal Slug X
Pocket Marco - Metal Slug Attack (In terms of design)
Mini-Slug - Metal Slug Attack (In terms of design)
MSA (Marco) - Metal Slug Attack
Red Devil Morden - Metal Slug Attack
Future MH-6 - Metal Slug 7 and XX
Annette - Metal Slug Attack
Lydia - Metal Slug Attack
Slugnoid Type-Ikari - Metal Slug Attack
Jet Clark - Metal Slug Attack
Ptolemaios (Curse) - Metal Slug Attack
Slugnoid - Metal Slug 2, X, 3, 4, 7 and XX
Sergeant Drill - Metal Slug Attack
Ptolemaic Slug EX - Metal Slug Attack
Ptolemaic Slug - Metal Slug 5
Ptolemaios - Metal Slug 5 (Unused)
Special Trevor - Metal Slug Attack
Everlasting Summer Madoka