  Observational and theoretical evidence in support of metallicity dependent
winds for Wolf-Rayet stars is considered. Well known differences in Wolf-Rayet
subtype distributions in the Milky Way, LMC and SMC may be attributed to the
sensitivity of subtypes to wind density. Implications for Wolf-Rayet stars at
low metallicity include a hardening of ionizing flux distributions, an
increased WR population due to reduced optical line fluxes, plus support for
the role of single WR stars as Gamma Ray Burst progenitors.
