José Arnulfo Castorena Vélez (born 27 May 1978) is a Mexican Paralympic swimmer who competes in international elite events.

He is a four-time Paralympic champion, five-time Parapan American Games champion and a seven-time World champion.

[1][2] Castorena was born with underdeveloped legs and a missing left arm.

He had a difficult upbringing when his mother died after giving birth to him, his father abandoned him and his grandmother looked after him until she died when Castorena was of a young age.

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