A Metal Gear Silence monster concept design.
Yet another monster for (you may have guessed it) Solid Snake.
At some point during the Metal Gear Solid games, one member of the snake "family" said they felt safe when hiding in a cardboard box, I basically went along with the safety and dependence he felt in and on the box (and most likely grew to feel due to it's now infamous uses during the gameplay) to make this monster.
The outer layer panels shows just closed, neutral, feminine lips (It can smile though)
The inner layer panels shows the lips in an "O" shape, thus making like the lips are seductively coercing in...that fashion (or could these lips be of the...other types of lips?...that's for you to decide).
The arms can climb & crawl the whole body around and if it needs to lunge forward or just, they basically push like a bench press to make it hop around like a frog.
The "face" can vary on it's panel appearance, making each encounter you have with it more unique.
Inside this box is a connected "umbilical cord" making itself in the shape of a tongue. Symbolizing Snake treating the box sometimes as a womb to be safe and bundled in.
The skin on it's body is of like the symbiotic mix of cardboard and skin (not that imaginative I know lol). Making it's panels switch between being as hard as the box or as stretchy as skin. Maybe the mix of the two can make it harder than cardboard though.
There could even be an easter egg function with this thing