He is known for his boastful confidence in his horrible singing voice, though he considers himself a great singer. His singing voice is so horrible that in a story in which Noby and Doraemon try to mute it in a silent world, his writings of the song lyrics in a board end up having the same effect as when they hear them, and in some films, his singing is enhanced to become an effective weapon comparable to an explosion. In some episodes when his voice is recorded and he hears it, he instantly denies it being his voice and threatens to beat up the person who sung his songs in a very bad way. Several of the stories revolve around Noby and his friends' efforts to avoid Big G's concerts. Big G is also confident in cooking, but just like his singing, his hand-made food can be a nightmare for other people very easily.
- Big G., along with Noby, Doraemon, Sneech & Sue will meet Team Robot in Team Robot's Adventures of Stuart Little 2 & will be guest stars in Emerl & The Super Mario Bros.
- Big G., along with Noby, Doraemon, Sneech & Sue will join Tino Tonitini and his the team in Tino Tonitini Says Hey Arnold: The Movie.