Exploding Dragon Fist: If Gokou Can't Do It, Who Can?

Years later, an evil magician named Hoi found Minosha's box and released the bottom portion of Hirudegarn. He then set about trying to find the other box. Gohan and Videl go to rescue a man from commiting suicide. The man, Hoi, tells them that a great evil is coming and a man in a box must be released, for he is a great hero. They assure him they will help, and find Tapion's box. Since they are unable to open it, they gather the dragonballs and wish it open. When Tapion emerges, all that he will say is he is evil.

Trunks admires Tapion, but Tapion won't give him the time of day. Hoi steals Tapion's whistle, and Trunks gets it back. Upon seeing this display, Tapion repents and tells them about Hirudegarn, and why he cannot sleep for fear of the monster escaping. Bulma, feeling sorry for him, builds a special room for him where he can sleep. The monster still escapes.

Hirudegarn's two halves come together, and the monster is reborn. Hoi tries to control the monster, which promptly kills him. As the battle ensues, everyone is defeated. Tapion tries using his whistle, but it shatters so Goten and Trunks fuse together, and Super Saiyan Level 3 Gotenks beats on Hirudegarn until he goes into a cocoon. When he emerges, he has wings and is stronger. Only Gokou is still standing. He refues to give up, and keeps fighting Hirudegarn until he hits Hirudegarn with a dragonfist uppercut. Hirudegarn is engulfed by a golden dragon, and destroyed.

Now that Hirudegarn is dead, Tapion wants to return to before he was shot into space and live his life again, so Bulma makes him a time machine. Before he leaves, he gives Trunks his sword, which he doesn't think he will need anymore. The sword is the same one that Future Trunks used when he defeated Frieza and King Cold.