Top panel: comparison between SN 2017ens and other SNe at three selected epochs. Middle panel: comparison between SN 2017ens and the Type Ic-BL SNe 1998bw and 2003jd. The lower spectra have their continuum removed assuming a blackbody. Bottom panel: comparison between SN 2017ens and the Type IIn SN 2010jl at optical and NIR wavelengths.