Fan Casting Shining Knight in Green Arrow

Business Associate of Robert Queen, perhaps became a trusted friend over time? Also agreed to watch over Oliver and has been helping Moira to stave off Malcolm Merlyn. (So slight reinterpretation, I would have it so that he's reeducated himself to be able to adapt to Savage's tactics and even created flash grenades to help him in his mission) Kind of wanted to include this character as they are related via Seven Soldiers Of Victory and (also Charlie is unclear about Green Arrow so thought itd be fun to connect him this way) in this iteration he's an ancestor of the Queen family on Moira's side?