"A charging attack that breaks the opponent's guard when they are hit."
As he says "I'll kill you hard", Dodoria charges towards his opponent with a headbutt, with his head spikes causing great pain, and then he pats his head.
Video Game Appearances
It appears under the name Dodoria Headbutt (ドドリアヘッド Dodoria Heddo, lit. "Dodoria Head") in Dragon Ball Xenoverse 2 where it appears as one of Dodoria's Super Skills. It can also be learned by the Future Warrior by completing School Quest: "Lesson 2" of Dodoria's Training.
Interestingly, it is referred to as Brutal Headbutt in the plot description of Lesson 2 of Dodoria's training despite the skill being listed as Dodoria Headbutt in the lesson's basic rewards section.