Tony Dahl was an eccentric crewman. He has a background in history and social sciences, as well as cultures. He joined Starfleet to escape life on Earth and to learn about other species. He became a very valuable crewman due to his abilities and skills. He understands cultures, and has a different perspective than most. He grew up in a very racist household, but vowed to not live his life the same as his family. He deplores prejudices and racism, but realizes that he is prejudicial. He can separate his biases, though, and so has a fresh perspective on alien species that most don’t. He is a quick study in languages, though he never had any official training in linguistics. He consults with Hoshi Sato on occasion for help in this area.