Agent Brand is half alien/half mutant, and a character from Joss Whedon's run on Astonishing X-Men. Marvel doesn't really know what to do with her currently, since they've given her job and role in the comics to Captain Marvel (Carol Danvers), so she mostly just seems to wander around the S.W.O.R.D. space station (that's Sentient World Observation and Response Department).
