Johnny Galecki
49 years old
Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big B...
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Harley Quinn DC Universe Animated Series Future Characters Fan Cast
by DC Entertainment and Warner Bros.
A fan cast for more DC Comics characters that might make an appearance in further episodes or seasons in the series.
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