Illustration of a bright LRD A2744-45924 (light-blue line; I. Labbe et al. 2024) as a globular cluster in formation (F. Martins et al. 2020). The gold line shows a young star cluster with nebular continuum self-consistently added, while the dark-blue line shows a supermassive star model. The combined shape (red line) highlights a “V-shaped” morphology as the star cluster dominates the UV and the supermassive star dominates the optical. The supermassive star model is not tuned to match the spectrum. Cooler supermassive star models may reduce the mismatch near 3500 Å, but no such models currently exist (see Section 2.1).