Stacked spectrum of 17 Faint He II emitters from both CDFS and UDS fields (black) and the stack of 899 sources from the parent sample in both fields with no He II emission (red). Shown in the inset is a zoom-in of the He II line, clearly demonstrating that there is He II emission in the stack of the Faint emitters. This gives us confidence to include even the Faint emitters in this study. The errors on the Faint stack are shown in Fig. 4.