|"The Mysterious Jackie Chun"|
|Rōmaji||Nazo no Jakkī Chun|
|Arc||21st Tenka-Ichi Budōkai Arc|
|Japanese||September 24, 1985|
"The Mysterious Jackie Chun" (謎のジャッキー·チュン, Nazo no Jakkī Chun) is the forty-third chapter of the Dragon Ball manga.
As Jackie Chun is on the verge of a ring out and defeat at the hands of Kulilin, Chun resorts to using a Kamehameha to propel his momentum back to the ring, shocking everyone. As Bulma and Gokū contemplate seeing the technique before, Yamcha becomes convinced that Jackie Chun is Muten Rōshi. A puzzled Kulilin then runs out of ideas to combat Chun, and is quickly defeated.
After the match, as Chun informs Kulilin that he needs more training, Yamcha tries to force Chun into revealing that he is Rōshi. The former bandit then instructs Gokū to use his nose to sniff Chun and see if his scent is the same as Rōshi's, but Chun counters by putting on cologne. The next match is revealed to be Gokū versus Namu. As Chun is still perplexed by Namu's seriousness, Yamcha is still confident that the former is Rōshi.