  We present results from the BANYAN All-Sky Survey (BASS), a systematic
all-sky survey for brown dwarf candidates in young moving groups. We describe a
cross-match of the 2MASS and AllWISE catalogs that provides a list of 98 970
potential nearby dwarfs with spectral types later than M5 with measurements of
proper motion at precisions typically better than 15 mas yr$^{-1}$, as well as
the Bayesian Analysis for Nearby Young AssociatioNs II tool (BANYAN II) which
we use to build the BASS catalog from this 2MASS-AllWISE cross-match,
consisting of more than 300 candidate members of young moving groups. We
present the first results of a spectroscopic follow-up of those candidates,
which allowed us to identify several new low-mass stars and brown dwarfs
displaying signs of low gravity. We use the BASS catalog to show tentative
evidence for mass segregation in AB Doradus and Argus, and reveal a new $\sim$
13 M$_{Jup}$ co-moving companion to a young low-mass star in BASS. We obtain a
moderate-resolution near-infrared spectrum for the companion, which reveals
typical signs of youth and a spectral type L4 $\gamma$.
