Leopold Jr Slikk was born on July 2, 2002 and is one of Leopold, Leonard, and Leonidas's little cousins. He is a tad- shy, and likes to play with Leopold and hates Leonidas. He has a mild obsession with trains, and lives with Leopold and the boys's uncle. He is often seen playing with his other older cousins. He is the third young cousin in the AGK family.

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