Ніїдзума Ейджі

Niizuma is slightly naive, but can also be serious and calculating when he wants to. Eiji tends to act conceited because he is hailed as a genius; however, after working on Crow for quite a long time, he grew more humble, even claiming to not be "good enough of a Mangaka to be judging other people's work" when asked by his editor to judge for the Golden Future Cup. (He judges anyway, but is not very helpful, only expressing his interest in Ashirogi and Ryu Shizuka). He tends to make noises and sound effects when drawing or writing his manga.

Eiji is constantly chastised by his editor, and at first seems to be rather oblivious towards his rivals' feelings towards him, even expressing great excitement when he meets Ashirogi Muto and saying he is their fan. He is a great lover of manga and his opinion are valued by everyone at Jump, including his rivals. He refers to himself as an "Eternal Boy" and that is why he writes Shonen manga. He has only ever had a crush on one girl, back in elementary school, which paired with his naivet'e most likely explains his lack of success in the Super Leaders' Love Fest.