Resolved profiles of He I emission lines (black) from Delorme 1 (AB)b detected from its grand median spectrum in this work. The red curve shows the least-χ² fit to the line profile, composed of either pure NC or with the addition of a BC. In case of the latter, the red curve represents the total profile fit. Residual from the fit is shown in the bottom sub-panel of each line plot. The line profile for λ3890 (bottom left) is obtained after the Balmer line H8 was modelled and subtracted from the data (see Appendix C). The bottom middle panel shows all the He I lines plotted agains respective velocity scales, demonstrating relative strength and asymmetry. The bottom right panel illustrates the variability of their integrated line flux in time, normalised with respect to the corresponding grand median values. Downward triangles represent tentative detections with confidence between 1-3σ. The y-axis for all panels except the bottom right shows the flux in units of 10⁻¹⁶ erg cm⁻² s⁻¹ Å⁻¹.