Vultureman was a villain in the 1985 incarnation of Thundercats. An anthropomorphic vulture, Vultureman was a member of the Mutants from the planet Plunn-Darr.
Vultureman was not a crewman on the original Mutant ship that pursued the Thundercats to Third Earth. Rather he joined the Mutants on Third Earth sometime after their first ship landed on that planet.
Vultureman was considered to be "the brains of the operation." Being a master mechanic and inventor Vultureman invented many of the weapons and technologies the Mutants used in their fight against the Thundercats.
Vultureman was ambitious and somewhat open minded for a villain. As such he was willing to go off on his own or work with other groups to achieve his goals.