Robert Queen

Robert Queen was the father of Oliver Queen as well as the step-father of Thea Queen. He founded Queen Consolidated, which he ran together with his wife Moira. He died in 2009, shortly before Oliver's 18th birthday.

Before the Series
It is unclear if Robert married Moira before or after founding Queen Consolidated. He became the father of Oliver in May 1991. Thea was born in September 2000 and Robert raised her as his own daughter, but it is not known if he was aware that her biological father is Malcolm Merlyn.

At some point Robert bought an island in the Chinese Sea. He took Oliver there at least once.

Robert has known Tommy Merlyn since his birth and probably met Laurel and Sara Lance when they dated Oliver.

In 2009, Robert died under unknown circumstances.