Talk:Goku vs Sailor Moon/@comment-27225692-20160119161306/@comment-26387943-20160128131259

Quote from the DragonBall wiki: "Devilmite Beam (アクマイト光線) is Spike the Devil Man's ultimate attack that transforms an opponent's own negative thoughts into destructive beams that can annihilate anything in their path. However, it only works if there are negative thoughts in the target's mind to begin with. Due to this, outside of the video games, it is an all-or-nothing attack; it is either a sure-kill or a mere light show."

Goku is pure-hearted. Hence the attack doing nothing.