Lo puse en el hilo de anime pero por si a alguien le interesa y no se pasa por allí lo pego aquí también:
El cast confirmado hasta el momento para esta primera temporada es este. Aún faltan confirmaciones. No incluyo a actores confirmados para personajes secundarísimos que no se ni quienes son porque no recuerdo que hiciesen nada en el comic mas que salir de fondo o decir una frase). ME HE DADO CUENTA QUE ALGUNAS FOTOS HAN QUEDADO GIGANTESCAS Y UN PAR NO SE VEN AL ABRIR EL SPOILER PERO EN AMBOS CASOS DANDOLE A ABRIR EN UNA PESTAÑA NUEVA SE VEN PERFECTAMENTE.

Monkey D. Luffy (Iñaki Godoy)
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Roronoa Zoro (Arata Mackenyu)
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Nami (Emily Rudd)
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Usopp (Jacob Romero Gibson)
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Vinsmoke Sanji (Taz Skylar)
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Luffy niño (Colton Osorio)
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Shanks (Peter Gadiot)
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Lucky Roux (Nthlanla Morgan Kutu)
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Yasopp (Stevel Marc)
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Higuma (Tamer Burjaq)
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Coby (Morgan Davies)
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Alvida (Ilia Isorelys Paulino)
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Shimotsuki Koshiro (Nathan Castle)
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Zoro niño (Maximilian Lee Piazza)
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Shimotsuki Kuina (Audrey Cymone)
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Rika (Kamdynn Gary)
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Helmeppo (Aidan Scott)
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Morgan (Langley Kirkwood)
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Buggy (Jeff Ward)
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Alcalde Boodle (Lindsay Reardon)
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Cabaji (Sven Ruygrok)
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Kaya (Celeste Loots)
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Kuro (Alexander Maniatis)
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Merry (Brett Williams)
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Sham (Bianca Oosthuizen)
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Buchi (Albert Pretorius)
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Banchina (Chanté Grainger)
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Zeff (Craig Fairbrass)
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Fullbody (Jean Henry)
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Don Krieg (Milton Schorr)
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Dracule Mihawk (Steven John Ward)
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Arlong (McKinley Belcher III)
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Nojiko (Chioma Antoinette Umeala)
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Genzo (Grant Ross)
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Kuroobi (Jandre le Roux)
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Chew (Len-Barry Simmons)
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Nezumi (Rory Acton Burnell)
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Bell-Mere (Genna Galloway)
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Nami niña (Lily Fisher)
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Monkey D. Garp (Vincent Regan)
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Me parece un casting enormemente acertado en lo físico. Si bien hay un puñado de cambios de raza, de blanco a negro, son personajes secundarios y no se hace raro a la vista. En el caso de Sham hay un cambio de género pero tampoco creo que no encaje con el personaje.