Scientist sanemi,uzui and siren rengoku

Sanemi shinzugawa is a scientist that work for the goverment he has given a new specimin a siren called giyu tomioka that they captured and brought to the lab he works on the siren with a man called uzui tengen

sanemi shinzugawa:has white hair violet eyes scars allover his body is about 21

giyu tomioka:long black hair deep blue eyes is about 21

uzui tengen:"Tall white hair red eyes painted nails is about 22