Sid is an undercover cop with the HPD and who has 25-years experience of working in executive protection profession. This self-defense instructor's background protecting client lists of dignitaries, celebrities to high-level threats of the common person is seriously impressive by the highest standard.
In Malama Ka Aina, he appears to be married with a young daughter and it's revealed that he's also Lieutenant Chin Ho Kelly and Officer Kono Kalakaua's cousin.