Top panel: Variation of projected axis ratio bias with number of satellites with different mass cuts applied to the satellite catalogue. The host halo mass is confined to haloes with DM mass >10¹⁴ M_⊙, for the fiducial hydrodynamic m₈ case. Bottom panel: Difference between the bias estimated from the MC and the bias estimated from the satellite positions at different mass cuts (Δ bias=b_MC−b_sat).