Takeshi Gouda, more commonly known by his nickname Gian, is one of the main characters in the Doraemon series. In the English dub, he is known as Big G.
Gian is recognized by his large build (might partly be contributed by obesity), as well as his mean and violent behavior. He "rules" the neighborhood with force, often to the physical expense of other children, especially Nobita, who often resorts to asking Doraemonfor gadgets to get even on him. In addition, he has a tendency to rob things from other children, usually Suneo, who offers himself to be Gian's sidekick in most occasions.
Despite his flaws, Gian is actually a good person inside and is always helps his friends and is loyal to them when they are in trouble. The official US Doraemon website states that deep inside, Gian is just a simple guy with a big heart.