Who is Siu? He looks like a lizard cat
Siu is a botanist and a doctor, specializing specifically in intelligent plant life biology. Currently i dont have the name for his species and its all still under work (just dont have time for it).
Once has been hired by medical wing on Aurus station as one of botanist doctors to treat, at the time, mortally sick Aurus. Siu's job was more about physical treatment of the boss, constantly monitoring Aurus health and reporting back to main wing. Due that they grew quite close, to the point of Aurus actually trusting Siu to be a friend.
Siu still dont really recognize that and quite timid around the guy. In general Siu is a meek guy, hardly understand social cues and pretty much in love with his job.
About the Sius anatomy: This species has cartilage skeleton and VERY powerful muscles, they can literally fit in any space as long as their jaw can fit. Skin is covered in soft scales, so small its really hard to even notice with naked eye. Underside of the neck, belly and tail is covered with ventral scales. They are covering "gills" which are adapted for filtering air. They are quite adaptive to various environments and known to be good scouts \ spies. And they can eat pretty much everything, prefereng insects and fish.
