Upper row: metallicity slice of gas around Dopey’s dark halo in our simulation with the superbubble feedback model (left) and in the simulations of Shen et al. (2014), with the blastwave feedback model (right), at redshift z = 0.211. Bottom row: temperature slice of gas within Grumpy’s dark halo in our simulation with the superbubble feedback model (left) and in the simulations of Shen et al. (2014) with the blastwave feedback model (right), at redshift z = 0.377. The virial radii of Dopey and Grumpy are marked by the white circles.