giacomo keaton gianniotti is an italian-canadian film and television actor. he was born in rome, italy, in 1989, and emigrated with his family to toronto, canada, at a young age. he studied theater at humber college and made his acting debut in the italian television series medicina generale in 2010. he has since played recurring roles in several television series, including reign, murdoch mysteries, and grey's anatomy. in 2016, he married nichole gustafson. in 2022 and 2023, he played the title character of the movies diabolik - ginko attacks! and diabolik - who are you?
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