How is 2 bit a flat character in the outsiders

There is little to no character description, as well as feeling and depth.

Explanation:

Two-Bit Mathews was around six feet tall, stocky in build, and was very proud of his long, rust-colored sideburns. He has grey eyes and was always wearing a wide grin. In The Outsiders novel, Two-Bit's hair is described as 'rust colored.

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cafeology

delfino 2: diez in the desert analysis: the story, delfino 2: diez in the desert was really about not giving up! that is basically the theme of the story, and also being more prepared. the plot of the story was about diez, the main character, traveling through the harsh desert with other immigrants. also, that keeping the group alive and getting them to their final destination. the setting of the story took place in mexico in the harsh desert.

what part is in bold?