In a comedic spin-off media, Rosetta’s alternate counterpart, Rosey, emerges as a figure fixated on maintaining impeccable posture and evading physical back strain. She surfaces during the "Big Bad Shadow" event, mingling with the main crew among gag-themed alternate character iterations. Though absent from central plot involvement, Rosey makes a fleeting appearance in the epilogue, transported across the Grandcypher aboard Cagliosled—a sled-shaped adaptation of fellow character Cagliostro. Her characterization amplifies eccentric mannerisms, including relentless fretfulness about posture mishaps, consistent with the series’ emphasis on comedic parody through exaggerated traits. This iteration remains confined to its brief role within the event’s lighthearted framework.