One Piece's lost Dragon Ball Z crossover is finally coming to the US - Polygon

One Piece episode 590, a crossover episode between One Piece, Dragon Ball Z, and Toroki, is coming to the United States for the first time when it airs on Toonami on March 4.

Code Geass (TV Series 2006–2008) - News - IMDb

Uta - News - IMDb

Why didn't Naruto get a crossover with DBZ and One Piece but Toriko did? - Quora

Animation Magazine - Siggraph Issue - Aug #332 by Animation Magazine, Inc. - Issuu

Is the anime crossover of One Piece and DBZ (including the one with Toriko in the mix, all three) considered Canon? - Quora

Puzzle & Dragons - Wikipedia

One Piece, The Mission Begins

The Release Date has been Announced for Dubbed Crossover of 'One Piece' and 'Dragon Ball Z

One Piece, The Mission Begins

Uta - News - IMDb

Animesque - TV Tropes

One piece X DragonBall Z crossover coming on Adult Swim March 4th! : r/adultswim