Giants in Marvel Comics are really big people that are often much taller and stronger than regular humans. They can be like superheroes or villains, and they can have all sorts of powers like being really smart or having super strength.
Some famous Marvel giants are characters like Giant-Man, Goliath, and The Thing. These giants often have a special costume or outfit that helps them use their powers, like a suit that makes them grow really big or shoes that give them extra strength.
Giants can be really important in Marvel Comics because they often play a big role in fighting against evil villains who are trying to do bad things to the world. They use their special powers to protect people and fight for what's right.
So basically, giants in Marvel Comics are really big, superpowered people who fight for justice and protect the world from harm!