Solidus

Solidus Snake is one of my favorite MGS characters, and in my opinion the most underrated. He has a fascinating backstory - perfect clone of the perfect soldier, African warlord, President of the United States of America. He also works as an interesting foil - attempting to stop The Patriots, foreshadowing Solid Snake’s accelerated aging - and is obsessed with passing on his legacy and memes. But he doesn’t really show up outside of MGS2 which is a shame - not even a mention as MGSV calls back to the Les Enfants Terribles project.