A 1956-1966 sci-fi mecha/robot manga series by Yokoyama Mitsuteru. It has been adapted into several media franchises.
TETSUJIN 28-GOU is notable because it's actually considered one of the first super robot anime series ever made.
The following tags implicate this tag: taiyou_no_shisha_tetsujin_28-gou, tetsujin_28-gou_(1st_series), tetsujin_28-gou_(2004), tetsujin_28-gou_fx, and tetsujin_28-gou_gao! (learn more).