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"The Puppy" is a moniker bestowed upon Alfie Allen's character, Iosef Tarasov, in the renowned action-thriller movie series, John Wick. This sobriquet alludes to his fierce loyalty and unyielding devotion to Viggo Tarasov, the formidable head of a powerful New York crime syndicate. Iosef's unwavering faithfulness and willingness to viciously protect Viggo's interests earn him this canine-inspired epithet.