Strong vs. Strong (強敵同士, Kyōteki Dōshi; lit. "Mutually Strong Opponents") is the one hundred sixth chapter of the Dragon Ball manga. The chapter's anime counterpart is the first half of the episode "The Strong Ones".
The cover of this chapter shows many little squares on it. Some squares contain letters that eventually spell out Dragon Ball. These squares are separated by squares containing characters, such as Krillin, Baba, Shenron, Upa, Yamcha, Bulma, Grandpa Gohan, Master Roshi, Oolong, Puar, and Goku. This cover art is also featured in Daizenshuu 1. Shenron was originally colored blue, but was changed to green in the Full Color release.
Goku and the mysterious masked fighter stare each other down. Goku's friends are stunned by the incredible fighting displayed by both Goku and the masked fighter. The masked fighter then charges at Goku, trying to hit him, and Goku kicks the masked fighter. The masked fighter grabs Goku's leg, slams him into the ground, then flings him into the sky. Goku's friends are surprised by this, and wonder what the masked fighter will do next. The masked fighter flies up to Goku and kicks him back to the ground, hard, thinking Goku will not be able to brush the attack off. Much to his surprise, Goku flies up in the air and kicks him, almost knocking him into a building. The masked fighter quickly recovers from the hit before hitting the structure, and launches himself forward, about to kick Goku. Instead of dodging or blocking it, Goku takes the kick head-on. This excites Goku and unnerves the masked fighter, who is surprised that Goku was able to toughen himself up so much. The masked fighter then surprises Goku and the others by firing a Kamehameha at Goku. Goku surprises everyone by using the Afterimage Technique to evade the masked fighter's attack.