Stellar-to-halo mass relation of simulated dwarf galaxies: black points represent galaxies run without BHs and AGN feedback, while coloured squares represent those galaxies run in the fiducial model, i.e., including a central SMBH. In this case, each galaxy is shown with a different colour reflecting the mass of its central SMBH. Each fiducial or non-AGN pair (i.e., a simulation with the exact same initial conditions) is connected with a line. In solid blue, the abundance matching relations from Moster et al. (2013) are shown with a scatter of 0.2 dex as a shaded blue region. Estimates of Guo et al. (2010) and Girelli et al. (2020) are shown with dashed dark and dash-dotted purple lines, respectively. Galaxies harbouring SMBHs more massive than ∼ 10⁶ M_⊙ have a strongly reduced M_⋆ compared to their non-AGN counterparts.