Kippenhahn diagrams for 60 M_⊙ models at galactic, LMC, and SMC metallicities with our preferred parameters of very efficient semi-convection and minimal overshooting (α_semi = 100 and α_ov = 0.1, with rotation). The color bar represents the core He abundance to highlight post-MS evolution, whereas blue circles represent convective regions, with hatched blue regions showing an extension of the core by overshooting. White hatched regions illustrate semi-convective mixing. The envelope mass decreases with increased metallicity, and subsequently decreased semi-convective regions.