Hali is a humanoid osprey that, while technically not born on Earth, isn't an alien. He's part of the United Terran Federation's Nova Vida project, designed to combine human DNA with animal DNA to produce hybrid creatures.
Of course, that's just his ancestry. He was a warrior at first, a diplomat second, and now you could call him an interstellar explorer. Not the career path he imagined as a chick helping his dad catch fish for the village.