'Sidekick' is a specialized diploid watermelon cultivar developed to serve as a pollinator for seedless (triploid) watermelon varieties. It is characterized by its prolific and extended production of male flowers, ensuring consistent pollen availability throughout the flowering period of triploid watermelons. The plant exhibits a compact growth habit with small, deeply lobed leaves, minimizing competition for resources with adjacent seedless watermelon plants. Approximately 85 days