Jo'an Stargazer is a boy who got turned itno a thwomp by Bowser jr.Rosalina has it in her memory that they met when Bowser's Galaxy exploded.In Super Princess Rosalina(STVH7 Version) every boss is a thwomp.At the end of each battle you as Rosalina kiss the thwomp on the cheek to see if its him.Its not Jo'an until the final boss(Shockerrrr)who has Jo'an-ish hair.Since he doesn't do anything,you just fight Bowser

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