Mordin Solus, the very model of a scientist Salarian. He’s studied species from Turian, Asari, and Batarian. He’s quite good at genetics, as a subset of biology, because he is an expert, which he knows is a tautology. His xenoscience studies range from urban to agrarian. He’s truly the very model of a scientist Salarian.
Also, he kills mercenaries and leaves their bodies as a warning to others. That’s kind of intense. Just saying.