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One Piece: Season1 | Episode12
Clash with the Black Cat Pirates! The Great Battle on the Slope!
Usopp resolves to keep his story of pirates attacking the town a lie by making sure none reach it. Luffy, Zoro, Nami, and Usopp then try to keep the Black Cat Pirates at bay.
S1 - E1I'm Luffy! The Man Who Will Become the Pirate King! Oct. 20, 1999
S1 - E2The Great Swordsman Appears! Pirate Hunter, Roronoa Zoro Nov. 17, 1999
S1 - E3Morgan VS Luffy! Who's This Beautiful Young Girl? Nov. 24, 1999
S1 - E4Luffy's Past! The Red-haired Shanks appears Dec. 08, 1999
S1 - E5Fear, Mysterious Power! Pirate Clown Captain Buggy! Dec. 15, 1999
S1 - E6Desperate Situation! Beast Tamer Mohji vs Luffy! Dec. 29, 1999
S1 - E7Grand Duel! Zoro the Swordsman vs Cabaji the Acrobat! Dec. 29, 1999
S1 - E8
S1 - E9The Honorable Liar? Captain Usopp! Jan. 12, 2000
S1 - E10The Weirdest Guy Ever! Jango the Hypnotist! Jan. 19, 2000
S1 - E11Expose the Plot! Pirate Butler, Captain Kuro! Jan. 26, 2000
S1 - E12
S1 - E13The Terrifying Duo! Meowban Brothers vs. Zoro! Feb. 09, 2000
S1 - E14Luffy Back in Action! Miss Kaya's Desperate Resistance! Feb. 16, 2000
S1 - E15Beat Kuro! Usopp the Man's Tearful Resolve! Feb. 23, 2000
S1 - E16Protect Kaya! The Usopp Pirates' Great Efforts! Mar. 01, 2000
S1 - E17Anger Explosion! Kuro vs. Luffy! How it Ends! Mar. 08, 2000
S1 - E18
S1 - E19The Three-Sword Style's Past! Zoro and Kuina's Vow! Mar. 22, 2000
S1 - E20Famous Cook! Sanji of the Sea Restaurant! Apr. 12, 2000
S1 - E21Unwelcome Customer! Sanji's Food and Ghin's Debt! Apr. 12, 2000
S1 - E22The Strongest Pirate Fleet! Commodore Don Krieg! Apr. 26, 2000
S1 - E23Protect Baratie! The Great Pirate, Red Foot Zeff! May. 03, 2000
S1 - E24Hawk-Eye Mihawk! The Great Swordsman Zoro Falls At Sea! May. 10, 2000
S1 - E25
S1 - E26Zeff and Sanji's Dream! The Illusory All Blue! May. 24, 2000
S1 - E27
S1 - E28I Won't Die! Fierce Battle, Luffy vs. Krieg! Jun. 07, 2000
S1 - E29
S1 - E30Set Sail! The Seafaring Cook Sets Off With Luffy! Jun. 28, 2000
S1 - E31
S1 - E32Witch of Cocoyashi Village! Arlong's Female Leader! Jul. 19, 2000
S1 - E33Usopp Dead?! When is Luffy Going to Make Landfall?! Jul. 19, 2000
S1 - E34Everyone's Gathered! Usopp Speaks the Truth About Nami! Jul. 26, 2000
S1 - E35Untold Past! Female Warrior Bellemere! Aug. 02, 2000
S1 - E36Survive! Mother Bellemere and Nami's Bond! Aug. 09, 2000
S1 - E37Luffy Rises! Result of the Broken Promise! Aug. 16, 2000
S1 - E38Luffy in Big Trouble! Fishmen vs. The Luffy Pirates! Aug. 23, 2000
S1 - E39Luffy Submerged! Zoro vs. Hatchan the Octopus! Aug. 30, 2000
S1 - E40Proud Warriors! Sanji and Usopp's Fierce Battles! Sep. 06, 2000
S1 - E41
S1 - E42Explosion! Fishman Arlong's Fierce Assault From the Sea! Sep. 27, 2000
S1 - E43End of the Fishman Empire! Nami's My Friend! Sep. 27, 2000
S1 - E44
S1 - E45Bounty! Straw Hat Luffy Becomes Known to the World! Oct. 25, 2000
S1 - E46Chase Straw Hat! Little Buggy's Big Adventure! Nov. 01, 2000
S1 - E47The Wait is Over! The Return of Captain Buggy! Nov. 08, 2000
S1 - E48
S1 - E49Zoro's New Swords and the Woman Sergeant Major! Nov. 22, 2000
S1 - E50Usopp vs. Daddy the Parent! Showdown at High! Nov. 29, 2000- S1 - E51Fiery Cooking Battle? Sanji vs. The Beautiful Chef! Dec. 06, 2000
S1 - E52
S1 - E53The Legend Has Started! Head for the Grand Line! Jan. 10, 2001
S1 - E54Precursor to a New Adventure! Apis, a Mysterious Girl! Jan. 17, 2001
S1 - E55
S1 - E56Eric Attacks! Great Escape From Warship Island! Jan. 31, 2001
S1 - E57
S1 - E58Showdown in the Ruins! Tense Zoro vs. Eric! Feb. 21, 2001
S1 - E59
S1 - E60
S1 - E61An Angry Showdown! Cross the Red Line! Mar. 07, 2001