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The recent Gaia Focused Product Release contains radial velocity time-seriesfor more than 9,000 Gaia long-period photometric variables. Here we search forbinary systems with large radial velocity amplitudes to identify candidateswith massive, unseen companions. Eight targets have binary mass function$f(M)>1\ M_\odot$, three of which are eclipsing binaries. The remaining fiveshow evidence of ellipsoidal modulations. We fit spectroscopic orbit models tothe Gaia radial velocities, and fit the spectral energy distributions of threetargets. For the two systems most likely to host dark companions, J0946 andJ1640, we use PHOEBE to fit the ASAS-SN light curves and Gaia radialvelocities. The derived companion masses are $>3 M_\odot$, but the highGalactic dust extinctions towards these objects limit our ability to rule outmain sequence companions or subgiants hotter than the photometric primaries.These systems are similar to other stellar-mass black hole impostors, notablythe Unicorn (V723 Mon) and the Giraffe (2M04123153$+$6738486). While it ispossible that J1640 and J0946 are similar examples of stripped giant starbinaries, high-resolution spectra can be used to determine the nature of theircompanions.

High mass function ellipsoidal variables in the Gaia Focused Product Release: searching for black hole candidates in the binary zoo