Tetsuo Shima (島鉄雄 Shima Tetsuo) is a fictional character and major antagonist in the manga and 1988 animated movie Akira. He is portrayed as the main antagonist of the series.
Kaneda's best friend since preschool and the second principal subject of the story's theme. Tetsuo is shown as a black sheep in the gang that he is part of and quietly suffers from a deeply rooted inferiority complex. Tetsuo admires Kaneda yet at the same time strongly resents his own reliance upon him. After his psychokinetic abilities manifest, Tetsuo quickly becomes Kaneda's nemesis; he desires Kaneda's motorcycle (a symbol of status and power) and seeks to prove himself supremely powerful, without need of protection. Eventually, his power overwhelms him.