The Unfinished ‘Getter Robo Arc’ Manga Finally Gets An Anime Adaptation Without a doubt, 'Getter Robo' is one of the longest-running and most popular mecha series ever made. However, its final manga installment, 'Getter Robo Arc', was sadly unfinished due to the death of its author, Ken Ishikawa. Well, it looks like a new anime adaptation may change all that.