Rosa appears in one of the hypothetical outcomes of Peepers plan to use the Mind Combobulator for the invasion on Flendar. While Hater and Peepers are fishing, she appears and blows them a kiss, causing a fight between them and ruining their partnership. During the fight, she somehow falls for Ron, leaving both Hater and Peepers alone.
Rosa is a young woman of unknown species. She has light pink skin and long hair that is two colors: black and violet, and which has a pink flower in it. She also wears a dark pink dress with what appears to be a floral theme.
"The Brainstorm" (First appearance)(Last appearance)