Prominence Burn

Prominence Burn (プロミネンスバーン), full name Flashfire Fist: Prominence Burn (プロミネンスバーン), is an Ultimate Move performed by Endeavor and Dabi using the Hellflame and Blueflame Quirks, respectively.

Description
Prominence Burn appears to be the most powerful technique in Endeavor's arsenal. Endeavor uses the full might of his flames to emit a concentrated beam of heat from his body that is used to vaporize his target.

This move is so powerful that it completely overpowered Hood's Super Regeneration Quirk, with the powerful Nomu only surviving the initial attack by moving its head out of range, allowing it to heal afterwards. However, the Nomu was completely incinerated the second time Endeavor landed the attack, this time at point-blank range.

During the Paranormal Liberation War, Endeavor uses Hell Spider and Prominence Burn at the same time to attack Tomura Shigaraki, but he dodges it. Later, Endeavor uses only the Prominence Burn to finish Tomura off, which leaves him completely burned, however before he can be killed, All For One takes over the body and skewers Endeavor with Rivet Stab to make him stop.

Endeavor uses this move once more, this time against All For One, during the Final War. As a result, All For One's body is left completely charred, but this is quickly undone with him using a reverse-engineered Rewind-based Quirk-Destroying Drug to restore his body to its former glory.

Prominence Burn appears to be Endeavor's ultimate technique that he wishes to pass down to his sons, Toya and Shoto Todoroki. This goal is only partially fulfilled, as Toya, now known as Dabi, was shown to know the Ultimate Move, but was interrupted by Best Jeanist before he could use it.

Trivia

 * The name "Prominence Burn" likely comes from the stellar phenomena of, a low-energy gas eruption from the Sun's surface that extends kilometers into space.