Speed-o'-Sound Sonic vs. Paradise Group and Hammerhead

I've never let an opponent live. And I don't intend for that to change. I'm a perfectionist in my work. If you give up now, I'll let you live. So what will it be? Speed-o'-Sound Sonic vs. Paradise Group and Hammerhead was the battle between the ninja assassin Speed-o'-Sound Sonic and the B-Class criminal Hammerhead and his followers, the Paradisers.

Prelude
Hammerhead and the Paradisers threaten the life of Zeniru, who they believe to be corrupt. During their rampage, they defeat several riot cops and the top C-Class hero Mumen Rider. Zeniru is told to hide but refuses to do so, because it would ruin his reputation. Sonic, as Zeniru's bodyguard, proclaims he will handle Hammerhead and his followers.

Battle
As the Paradise Group closes in on Zeniru's home, Sonic confronts them and kills most of them by decapitating except Hammerhead. The latter then throws boulders at Sonic in an attempt to crush him, but Sonic easily dodges the rocks. As Hammerhead provokes him, Sonic realises that his right and left are surrounded with rocks, although he is relatively unbothered by this. Hammerhead then tries to crush Sonic with a tree thinking that he will hit if he knows which direction the ninja will be charging at. However; Sonic dodges, gets behind Hammerhead and hits the Paradise Group leader with a kunai, causing him to collapse.

Aftermath
Sonic calls Zeniru and tells him that he's dealt with the Paradise Group and that the body of Hammerhead is there, only to find out that his body has vanished. A scared Hammerhead runs off into the woods and notes how lucky the kunai hit his head, as his skull is many times thicker than a normal human's.