Euclid NISP spectra for example candidates from the UCD-agreed category, with the format following that of Figure 13. The spectrum of the last candidate, EUCL J035236.14−483012.4, only has a J-band S/N of 4.7. Although this S/N is lower than the threshold we adopt for performing template fitting analysis, we find its spectrum is similar to that of an L6 template. We keep this object as an ultracool dwarf candidate; high-quality spectroscopy is warranted to refine its spectral type and confirm its nature.