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We present the results of a spectral variability study of two very luminousstars in the M33 galaxy -- LBV V532 and late WN star (possibly, dormant LBV)FSZ35. We studied spectral variability of V532, derived its atmosphereparameters and showed that the bolometric luminosity varies between the twostates by a factor of $\sim$1.5. Using the non-LTE radiative transfer codeCMFGEN, we determined wind parameters for both objects. Since both stars arelocated at distances of about 100 pc from the nearest association, we supposedthat they may be massive runaway stars with velocities of the order 100 km/s.

Modeling Hydrogen-Rich Wolf-Rayet Stars in M33