Yup. Singing robots; an annoying kid who talks about UFOs and imaginary monsters; an even more annoying dude in a wheelchair who looks and sounds like Otacon (maybe Otacon was cloned from Huey in the "Les Enfants Nerds" project); a super-powered mech with The Boss's brains; no human bosses; gay scenes with Big Boss and Kaz; There's just too much to list.
Let's not forget "peace" this and "peace" that. "My name is Kaz, it means
PEACE". "I'm Paz. My name means
PEACE, and I attended the University of
PEACE". As for Kojima, he was probably, "Hey guyzzz and Shinkawazzz, here's a huge mech, let's call it
PEACE Walker, and use a
PEACE sign for the cover, and call our new game
PEACE walker!".