Princess Sherry is the only offspring of the current King Zebulos, and is slightly naive.
In Rocket Knight Adventures, she is kidnapped by the Devotindos Imperial army because she is bound to inherit the "Key to the Seal."
In Sparkster: RKA 2, SEGA version, Sherry pleads Sparkster to save Princess Cherry. Like he wouldn't have saved her anyway. ;)

Princess Sherry loves Sparkster deeply, and worries for him, wishing he weren't a Rocket Knight. She worries that something awful will happen to him. Sherry looks upon the younger Princess Cherry as unexperienced, or perhaps in better words, more naive than herself.

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